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This is why UTD Overhead Protocols offers:
1. Line laying and line retrieval
2. No visibility line following
3. Touch contact communication
4. Critical skills with no visibility line following
5. Lost line drills
6. Lost buddy protocol
7. Light failure
1 is complicated. You can teach the basics of primary/secondary tie off's, locks, jumps, etc. but learning proper line placement when you are in a cave is very different and can't be replicated outside of a cave.
2/3/4 can be done with any halfway decent cave buddy. There is nothing really "unique" from agency to agency about those skills. Some disagreements on how you do touch contact, but the different options are usually taught by all instructors. The difference here is it's really hard to replicate the up and down motion of a cave passage in open water. Learning how to control buoyancy with only the line inside of your thumb and forefinger just takes time in that environment. You can get close in some quarries, but they are aren't 3d.
5. no way you can do that in a quarry or pool because those are for all intends and purposes 2d areas with no walls. Lots of different ways to do lost line, but it's not something you can teach outside of a cave IMO.
6. same with lost buddy you can't really do that in anything but a cave because there is nowhere for the diver to hide. Lost diver is simply "tie off to gold line", go look. You look until you find him or you hit a gas limit. No point in doing that in open water
7. light failure is questionable as well. Deploying backup lights is one thing, but you're covering the 0 viz line following which is the important part. Deploying backup lights when you can see is easy.....
All that course is going to do is expedite the learning process once you're at the caves. I did 1/2/3/4 with buddies before I got down to Florida for training, and have helped several friends/students with them before they go. It certainly expedites the process and let's you learn some more of the subtleties, but it's not necessary with good instructors. It MAY shave a day off of training, but the real benefit is the gained comfort so you are less task loaded during those skills.