I’m relatively inexperienced when it comes to LO trolling, so don’t place too much trust in my answer. I’m just gearing up my boat for trolling this season. After extensive research, I’ve decided to go with the standard size Offshore OR12 for my purposes. They’re small enough for walleye, but large enough for several trout and salmon applications as well. I’ve even heard that you can pull a 1/2 core of lead behind them! They’re kind of pricey, so I like the versatility. Hope this helps.
Conor