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(William R. Watt) wrote in message ...
for a track system you only want it to go front to back. how do you get it
to return if its all underwater? they run snowmobiles short distances
over water but the top of the belt is above water.

if you try hinged blades you have to figure out how to get them to lie
flat on the back-to-front return trip as they will be hinged the wrong
way.

Well, you could have the return above the waterline... Or if the
return were sealed except for the flat on the bottom, the water would
just go over the top and be expelled when the flap exposed itself
again to make the push trip the length of the boat??? Still have that
steering problem though.
Scotty