We have hand crank scotty down riggers on our 14ft aluminum it is more than enough boat to handle small inland Lake Trout lakes try to find them with as big a spool as you can find the smaller the diameter the more cranking.
You will also need rod holders and a fish finder so that you can locate fish set up your depth and not lose balls this is a real pain. If you locate enough Lake Trout in one place you can use a marker bouy drift/anchor and jig for them with 11/2 oz to 2 oz buck tail jigs dropping them to the bottom and reeling them up to the surface as fast as you can, jigging just off the bottom etc...
Thank you for the information it helps a lot.