on fitting up a hooter i will get you my measurements, they are just scaled down of a f18 so should be fine

if its any use i'll tell u what i am doing

have a windsurfer mast bottom section about 10feet frm beam
roller reefer frm a yacht
i have a rs 400??? 13 sq m somthing like this is easy to get hold of as they are always avalable 2nd hand

it seams to roll ok in land trials, but we will see

i was looking for a yacht jib which would be heavy so a kevelar one would be great if affordable cutting it to size would be easy