What's the cheapest way to build a float?

Question

My best buddy and I have just had a beer or two while sitting on the cliffs here and decided we'll go and build ourselves a float this afternoon and paddle over to the islands across the bay.

What's the cheapest construction material and methods you can think of?

Answer 1

http://www.seminolerc.com/float_flying_b...            http://www.twitt.org/baxter.html                      best of luck.

Answer 2

My suggestion (a modern version of a traditional viking float) will probably require some time for completing the project (mainly due to prefabrication) but includes some sort of recycling.

Instead of bottles buy from now on 5L-party-kegs of beer (hopefully available in NZ), and do the necessary prefabrication by emptying them - if in a hurry organize a "floating party". Seal the holes of the kegs and fix them beneath a board of marine plywood. Have no idea how many kegs you'll need, but if you're still too heavy just have another beer.

Cheers and SKOL ;-)