When I first got the MH 10 years ago I stored my Steel 72 CU in the back storage bay with my rubber raft. It was a lot of weight for the plastic storage bin and after several trips I realized that it was just as easy to rent the tanks when needed rather than refilling and maintaining hydro, visual, and refilling on the road. As Honda CT90 mentioned above the Fla springs are nice to dive, Alexander, Juniper, Salt and Blue springs are all free when you camp there. Over time I found I preferred to free dive the springs rather than the hassle with scuba equipment.