There is a difference between sitting and thinking about all this and actually being in the middle of something happening.
Ive been asked about attending car accidents and how I handled all the blood. Until I was asked I didnt notice the blood. You just get in and do the job thats needed.
Fortunately I never had attend to pull anyone out of a cave, I just did the training. I got to see some fantastic caves etc that only a few people have ever seen. I only wish I could get my camera into some of those places.
Part of doing the training was to find out your limitations and to get farmiliar to those conditions. I know that after a couple of injuries that I cant get into some of the placed I have because I am not as manuverable now.
Now is the time to try a few things and see how you perform.
If you safely try thing out now, you will be able to concentrate on things that need doing if you ever need those skills.