The roller was the less expensive of the two 3" models available at the local marine supply - one of the coolest places, so many cool things, I got a 5’ “hook”/mushroom head, pre-adhesived disk (for those sweet 5" sanding disks w/loops on the back) to put on the heavy rubber disk of my sander there - prior to that I was customizing with 2" velcro from the craft store - I just happened to stumble upon it while perusing their sanding supplies… The main point of the roller is for the big flat areas - so great for working out bubbles as they arise.
I couldn’t tell you how much is weighs - rough guess 8 lbs +/- 2lbs???
Hard to tell in the pictures, but I hot wired the bottom nose rocker - about a foot, and the bottom tail rocker - about two and a half feet.
I used an electric planner a little bit, surforms a little bit, sanding planks quiet a bit. - and a hand saw for roughing the outline and deck tail foil.