Center Console Boats And More

boat pontoon problem?

can ANYONE help me please? I have a REALLY large canoe/kayak that i want to turn into a boat with alot of juice but my main problem is boyancy (sorry if my spelling is wrong). I have wored out that i would probably use air, foam or helium in the pontoons to make them boyant. If you have an idea please email me: weststigers94@yahoo.com.au or post it on this page