AMT has this really neat little start cart now with a pump and tank for starting their engines. Saw it at Toledo, wish I had taken a picture and asked the price. The SWB folks said they were coming up with something similar for the Mamba. I really don't care much for 3000 psi scuba tanks, too dangerous. AMT's are fantastic, utterly bulletproof engines but I didn't buy one because I just couldn't stand that whole scuba tank leaf blower routine. I can see the benefits of airstart, but wound up going with JetCat for reliability and "no fuss, no muss" starting. I like the direction AMT is going and can't wait to see what SWB comes up with for the Mamba. Sounds like you guys are already blazing this trail.