captain:Any feel for what would be a large enough inflatable to hold 2 divers, 4 tanks?Sideband:The small (12 to 14 feet) inflatables made by Zodiac, Avon and others made great dive boats. They are seaworth and safe and can be stored in an apartment. A 20 HP outboard is all that is needed. A handheld GPS and a inexpensive depth finder will find wrecks. But best of all it allows you to explore sites where the charters don't go to. Pack in a car or truck and you could get to just about any diveable part of the lake. You don't need a 40 footer and a slip. I dived out of a 13 foot Zodiac for years.