I also tried using an KIDDE empty dry chemical, the 3 pounds size, I had from my old boat , but it could not hold enough volume at sixty pounds, to do any good on the tractor inner tubes so after trying different things I ended up with air floatation bags from REI and home made and compressed CO2 ----- Original Message ----- From: LUDLOWD2@aol.com To: southisland2@earthlink.net Sent: Monday, November 01, 2004 7:52 AM Subject: Re: M_Boats: Re: furling genny - reefing cdi . . . Where did you get the air bags. Would like to add some myself. The paint gun cylinder is a good idea. Don