The main disadvantage with beads is the mess and pollution they will make if the bag gets punctured. Thats why most people opt for solid blocks and carve it to suit. Another option to contain the flotation is extra large dry bags. Look at Webtex ones as they are tough and cheap. They also can be used for camping gear when not required for flotation.
Originally Posted by beercan
(I can't believe how long ago I started this thread)
Only when the last tree has died
and the last river been poisoned
and the last fish been caught
will we realise we cannot eat money.
~Cree Indian Proverb