It's surprisingly hard to steer using drift socks or buckets, especially in a light 16-18ft aluminum, your brothers 26' ft Carolina has a heck of a lot more mass to pull the sock to turn. They do work, but at that point might as well just run your main motor with a sock and save the $, only problem is you are running a 2 stroke but add a little ringfree to your gas, go 1 heat range hotter on your plugs and always bring a few spares and it would get the job done as well
Going one heat range hotter will not cause detonation. If you were to go say 2 or 3 maybe I could see that happening due to severe overheating of the plug. But one heat range hotter simply allows the plug to run slightly hotter than the stock listed plug. Motor companies test the plugs and tell you to run the plug they feel runs the best across the rpm and speed range, but it might not perform very well at low rpm and speed (trolling), hence you run a hotter plug when you are at low rpm because they have more insulation and therefore run a few degrees hotter which aids in burning off the huge carbon deposits of a 2 stroke motor (another reason I said to run ringfree). If you really want to get nit picky then I suppose you could keep a few different heat range plugs on hand, and just change to the hotter ones when trolling and swap out for the ride out and back. But who wants to go through all that work lol