Thanks for your replies! I was worried about being slated as a loser, or worse, completely ignored, so it's really great to get your advice.
Rich, that was my first idea but then I got nervous and thought that a proven outline would save me on some stress. Right on about the surform too. I'd rather take it slowly and avoid a tragic slip of a planer. Do you suggest a particular one? Maybe you could suggest some tools which are available in the UK?
Yoyo, on top of 27 years of surfing(!) I've also done a LOT of reading over the last few months about the Simmons design. (The more you read the more you realise what a mystery surfboard design is! Lot's of contradictory stuff out there so I think I'll keep it as simple as possible first time found. Try reading what people think "concave" achieves, on this forum, and you'll see what I mean!) Boardcad sounds interesting, I'll definitely give it a go. I assume you can design in 3 dimensions, so rocker and volume can be calculated? I too love to recycle and have been racking my brains for alternatives to blown foam. I guess if I cracked that one I'd be a rich man!
Yaar43, I've been thinking about blanks (as I just said above) and I think the ideal blank would be USBlanks 6'8"RP (Rich Pavel no less!).
Overall Bottom Length: 6' 9 7/8" (207.96cm)
Tip-to-tip Deck Length: 9" (205.74cm)
Maximum Width: 251/8" (63.82 cm)
Maximum Thickness: 3" (7.62 cm)
I know it's a bit overkill as I'm thinking of making a 5'6 but it gives me the rocker I need. There is a similar 5'10"RP but it doesn't give me much to play with and I really want a flat tail rocker with maximum width.
I've read that the half moon profile fins lack a bit of drive and the keel style fins seem to be the most popular. I cant help feeling that a more contemporary fin profile might be better but for the sake of simplicity I think I'll stick with the keels.
I’ve been watching the mini simmons religion blog for quite a while now but unfortunately it's not updated much. It's got some great stuff on it though. It blows me away how much interest the simmons derived stuff has generated and how many people are building them.
Thanks again.