I used a rolling bag for all my stuff until reacently. It fell apart so I'm trying another way. My diving is the liveaboads out of Ventura or Santa Barbra or San Diegio. I also do local diving either Lake Tahoe or Blue Lake on the NV/UT boarder. I've also picked up Florida and Mexico cave diving. That involves flying. Because my $$ doesn't go real far, I am now in a plastic bin (28 gal) that I got in the hardware store. It doesn't have wheels. I can sit on the top to put my gear on. I am going to drill 3 holes on the lid/rim on each side and two on the ends and get plastic bolts and wing nuts to secure it for checked baggage. That way if TSA wants to look, they really want to look. 
