AHHA!! thank you for that, it slowly sinks in.... Now I get where I was going wrong (I deal a lot better with hands on things) and your...
OK I got some more info from the Oz dealer- they didnt have a displacement chart available, they are contacting the manufacturer to see if they...
Bit more info on the wilsons- they are modular plastics in 6ft lengths that plug into each other like lego at the ends and structural rails bolt...
they are the old ones and yup- they were slow as even with 150hp merc on the back it struggled I was looking at these Wilsons plastic pontoons...
they are basically a trapaziod as viewed from the rear (I suspect they are entirely built out of 4x8 ft ply sheets uncut except for the bottom...
its a plan and hopefully will follow my/a/anyones design... got a pontoon houseboat, 2 stories at front, 1 at back I have at a place up north,...