1. If you have to yes, but trolling motor is the best. Time is crucial in a tournament, I personally would rather use my trolling motor if it can do what I need it to do.
2. Once again dont waste time, just snap it unless it is the last one and it is working. And it retrieving a lure you will spook out the spot you are trying to fish and so it will trash your spot for a little while.
3. As I take it, dont just cast to a dock or laydown from straight-on, if their is a fish there, give him a lot of different looks and presentations.
Like I said about time, dont waste it, you could be making casts and possibly catching fish.