Looking into purchasing a Hookah system for use with my dredge. Don't want to go T80/gas powered and only use battery powered unit. I know you are limited to underwater time with them due to being battery but will have 2 batteries with me. only will be using about 2-3 hours max since most of my dredging is in shallow water (long arming) but want it in case I get into some good material that I need to get head under water. Been looking at the HOOKAHMAX, Brownie3rdlung, and Gator-gill systems but not sure which would best for it. Don't want to shell out too much money aka don't want to go over $1200 max so what are your thoughts. Oh yeah I hate gas systems.