Diver Dude:
This last weekend I did dives with both the 19 and a 13. Yes the 19 sticks out quite a bit as I am still using the factory bag. And yes since I was diving in heavy kelp it was a nuisance. I picked up a 19 bag and when I get a 13 bag, I'll replace the factory bag and mount them lower. With the factory bag the 50 was fine. I'll let you know if I have any issues when I mount the new bag. I also switched between using a dry suit and wetsuit. With the wetsuit I was only using a couple hundred psi on the 13. And after 3 dives still had 2200 psi in it, plenty for bailing out in the environment I was in.
I used the 19 when the safety margin I wanted warranted it. The boat/dive shop did the wrong mix, and a short fill (32% @ 2200) on my 28cu ft tank. So having the 19 was a nice comfort, knowing I could have made it back to the boat without having to surface or rush. Otherwise I would have had to change my dive plan. ( I just added a profile pic from the trip) The bailout in the pic is a 13 (&50) and as you can see the bailout sticks out a bit (thought I have the unit twisted a bit in the shot), but the 50 is totally hidden.
