Fish as a co-angler in the NWT. Even better is if you can prefish with different anglers. The reason I say different is you don’t want to get locked in to one way of doing things.
You will see how these guys manage their time. After captaining for HS bass anglers, one thing I notice is all of the wasted time picking out lures and retying. Have 3-4 setups pretied. If you are going to be changing lures(colors), narrow it down to a few options and have them ready.
Strategy-Are you on the right fish to win? Does a spot with numbers hold big fish too? The catch photo release tournaments have no doubt changed the way I fish. I have to prepare myself to possibly only get 5 bites per day when there is another technique that would result in better numbers but smaller fish.
Time on the water helps. Keep a journal. Journal and pay attention to the weather a couple weeks before and especially a couple days before. You might journal that it was flat calm on the day you fished and you caught Walleyes in shallow water. What you might have missed was the wind blew into there for 2 days so the water was stained. If you go back and try to repeat it on a flat calm day, you will likely find clear water and no Walleyes.
I think I could go on and on but I better get back to work.