I agree with fish master re YouTube. I would call company you plan to buy from for specs. I was looking at tx-44 walleye boards and found out they hold 12oz + downrigger ball or dipsy. But don't pull well with lighter tackle. Maybe that's what you want. The medium size boards, at least for me, seem more ideal for what I want to do, but probably won't be beyond 30 fow deep trolling