The SCUBA fill adapter you've got for paintball probably doesn't have a regulator, just a straight connection and bleed for a HPA tank. Used to do that too. Had the only VM68 (very, very custom) at WorldCup! You need the SCUBA regulator to drop the SCUBA tank's 3000 psi down to 125 - 150 psi for the low pressure regulator which then drops it to 90 psi for the air tool.

Your Atlantic 1000 sounds like a hike in an open cat. I had some friends that raced Prindles, but I've never been much of a multi-hull nut. Had a Hunter 30 that I ran to Bermuda once and the Bahamas a few times, and am currently shopping Catalina 22's. Just something for weekend coastal cruising that the VX can easily tow, since we're ideally located between both coasts.