I was not saying YOU are retarted, I was saying that arguing over the internet is retarted. Like I said, we come from different areas and I have no clue about the type of diving you do and vise versa. There are definately situations I would never hunt on scuba in, such as in the clear calm, relatively shallow waters of the Florida Keys, but its simply not like that here.
As for the depth thing...not supposed to say this but a typical dive profile is short and deep. Using air I would drop to 200' and look around. If nothing down there was worth risking my life for you work your way back to the surface while looking. After a 5 min stop at 15' the total bottom time is only 8-10 min or so. This kind of diving is risky as there are severe entanglement hazards, big fish that will drag you into the depths, mississppi river murk that you cant see the end of your nose in, and the dangers of the deep itself. a rig hunters rig is similar to a freedivers breakaway. If the shot is poor and its time to go up, you can unclip the shooting line from the gun and tie it to a rig leg, go to the boat and come back to finish the fight on the next dive....not as easy as it sounds in 200' with very limited bottom time while your narked out and the sharks have come to look at the 100 pound aj going nuts tethered to the rig...
A typical rig will be in a depth from 150' to 600'. We might drop on 10-15 per diver if we are tournament hunting. Keep in mind that I havent done this type of diving in over 2 years(I enjoy my freediving these days but I do miss the bigger fish of the deep)