Need some expert feed back. Trying to make a shortboard for a guy (70 kg) used to surfing mini-mals (eggs?) something that’ll paddle and be easy to ride but will allow progression to a more rail to rail modern shortboard surfing. I’ve been reading the various posts on rockers and foils and tried to distil some of the knowlege posted into this design. I think I’ve got a handle on most of the concepts and have tried to pull it all together to meet the above requirements. I’ve built myself a profiler based on KR’s generous not to mention excellent plans so I’m pretty confident I’ll end up with a rocker/foil pretty close to pic below. Dimensions for the board pictured 6’2" x 19" x 23/8" rocker is nose 4 3/4 tail 2 1/8 kept a fuller rounded nose 1. to create a bit of straighter rail in the middle to drive off. 2. for psychological reasons - looks more like the board currently being ridden Not a flat fish rocker and not as wide as a fish - trying to avoid the thing surfing flat. Still with faily low entry but with more tail rocker than you’d get in a fish thinish nose and tail. Thin nose to make it a bit easier to throw around. Thin tail to hold in a bit in steep waves and a bit more control coming off the top. Also stingers to pull the tail in without looking too funny. Tried to straighten the rocker a bit behind the fins to improve take off. Going for Redx X-2 carbon lights toed one inch off the nose. Not sure what type of rails yet. Bottom will be deep double concave in last 3rd to slight vee behind centre fin. For use in Victorian waves - fairly steep 2- 4 foot beachies and occasional down the line points, a bit of power now and then but nothing really hollow. Will this all work? appreciate any feedback suggestions 
my opinion is …your logic is pretty good on why you want certain design aspects ,you must have followed everything you read carefully… for vico waves especially east of the cape i reckon you either gota lose a little tail flip if you want that v or lose the v and keep the rocker ,if you do both plus that curvy tail outline it will lose to much speed out of turns in the softer waves and if its sucky it’ll hang up the top a bit and youll feel like your always falling out of the lip when coming off the top , if you wanna keep that outline (looks sweet)cann the v ,lose 1/8 in the rocker regards BERT
Sweet outline, the double wings maintain a straight/parallel outline in the tail while still allowing a quicker reduction in tail width. This is great as you only need slight shifts in the location of your rear foot to get another tail width to surf off of. Usually, I find that a board with double wings is going to be wider just ahead of the wings than a non-winger (what is the tail width at 12"? and if possible at 16"). Are the wings behind this 12" mark? I ask this because if the board is a bit wide in this zone you MAY benefit from a single concave (just a SUGGESTION) rather than double. The deep contours you want will do well in smallish surf, and I found that a single is the go to keep the rail-to-rail quickness. Most important is that vee off the tail. With the parallel lines of the tail, it is just begging for that release with a lot of vee (a lot= 1/8" on each swallow tip in the last 4-6") I’ve tested quite a few boards which are very close to your drawing and what you choose to do in the last third of the board (outline, rocker, contour(if any)) all interact to make a distinct feel. Build a board for the beachbreaks and another for those points where you live (I’ve only surfed there twice; so I may be wrong) Good Luck.
that outline looks great,i have made a lot of this style board. most are for the kind of customer you speak of. we make them up to around 6’10" but have done one 7’3"x24" for a real big guy. i have found the double concave to work best up here in our beachies. is you wanna check out the specs of our magic mullet in my board models you may get a few size comparisons. i think the table is a little dated but hope to sort it soon, dave http://www.feraldave.com 
Thanks for the suggestions +1. Tail width at 12" is 14" and at 16" is 16". the wings are at 14" and 5 1/2"
Those tail numbers are a little narrower (by about 1 to 1/2 inch total width) than what I think would exploit a deep single. A slightly wider tail combined with single concave and a quick transition to vee, however, and you won’t be disappointed. The width that you have will do well with a sunken double (that’s a single concave that is prevalent from about 6" ahead of your wide point, maxing about 12" ahead of the fin set and quickly going to flat about the middle of the rear fin, THEN shaping the doubles starting about 12" ahead of the fins, maxing within the front fins and diminishing with the single). You may or may not need vee depending on the amount of exit rocker. I am wondering the location of your wide point; is it more than 2" aft of center? The outline drawing looks sweet but now I am troubled by it as sometimes a line drawing just won’t look the same when drawn onto a rockered blank; I HOPE I AM WRONG. The tail could be a HAIR wider as a sunken double keeps the board holding even in semi-juice while giving that feeling of “having the parking brake released”. I imagine this style of board for non-epic conditions (70 percent/everyday stuff) so the wider tail caters well to that. Forgive me for throwing any doubt- the guys are right, double cons are gonna do well; I just remember going through a whole series of test boards just like you have… Good Luck.
Thanks for your feedback Bert, I’ve been checking this site for about a year. There’s a ton of ideas and theories posted here on everything you can possibly imagine. At first to me it was all totally confusing, but the things you see over and over stick in your head. You know it’s gotta be valid - becuase you’ve got guys here who have decades of experience and a body of knowlege that they’ve kind of developed as individuals in isolation in different parts of the world, basically saying similar things. Wouldn’t have happened before the Internet.
what program did you use to draw this up? looks nice! kirk
just shape it and then you will know…i know exactly what it will do .ive given you a few hints …in physics and hydrodynamics something thats seems logical and obvious ends up being the exact opposite …for example many people think a soft rail releases and a hard edge grabs,it kinda seems logical from an everyday point of view when we think of hard sharp things we see around us …but the reality is soft rails catch and hard rails give release.thats a hydrodynamic fact,there are many myths about concaves, rocker ,v,roll,they all seem perfectly logical from most peoples perspectives, 100 years ago it was perfectly logical to go to the doctor and be bled by having leeches placed on you it was an excepted practice …it was the current thinking of the day, everyone went along without question… hey look if everyone believes the same thing it must be right…? regards BERT
I used Freehand but Illustrator will do the same thing. I imported the .eps file into Photoshop to rasterize it. Freehand will raster vector art too but Photoshop does a better job. One problem using computers to design templates (plusoneshaper alluded to this) is surfboards are almost never looked at from this perspective, both shaper and rider are usually no more than two or three metres away. You’d have to be about ten metres away with the stringer at exactly eye hieght to get the view you see on your screen. The process of getting the design onto a template gives me a couple of oppurtunities to tweak the curves with a more common perspective, but if you were going from screen to cnc milled blank you might get a few surprises.