Wrapping your own mooring line around the prop is a damn fine way to crash stop, as long as the pile it's attached to remains planted in the Crown Estate's mud.
I could certainly offer a sub-module in that technique, while Para could demonstrate the use of other peoples' AWBs as crumple-zones/fenders/crash barriers.
Jimi, i'm afraid that the subject of heaters is not covered on the course and we've got a committee together and Tome said no scotch people.
Holding tank discovery will be covered on module two of the course however so if you would like to write a wee paper on the subject then it will be forwarded.
You'll need a heading 'Castigating others for not wearing lifejackets when we think they should' and the more advanced but closely related 'Arguing for more legislation in boating'