Hi Will
Just wanted to contribute regarding some of your comments, I did many of my tickets when I was able to i.e 16 including instructors, When starting off you may think you know a huge amount as I may have done because you have read all the books etc, but that fact is the Coxswains your refer to are going to have spent more time / been involved in more rescues and therefore just have more experience and better reasoning in certain situations they may not know more on paper but thats not what always counts. All im just trying to say is learn as much as you can from those guys as well as adding your own new ideas for certain situations. You will get more respect in the long run.
Good luck with the rest of your course
James