Where do people think the minium weight should be set? 45kg? (100lbs)
Take a look at the weight analysis I did last earlier this year :
http://www.xs4all.nl/~whijink/F12/F12_weight_and_cost_push_rod_setup.xlsI can't get it down to less then 63 kg ready to sail when using 4 mm ply.
A rotomoulded version will be heavier by at least 15 kg according to my data.
Even when using 3 mm ply (which is rather weak) you can't get it down to 45 kg overall while limiting yourself to only using simple materials and building methods.
Wouter
