Tie your bags to the front side cleats & only let out enough line so that the bag is just under the water doing its thing. You should only have it back 1/2 -3/4 the length of the boat & away from the prop ,bags should run great with no problem. If you go with a trolling plate get a spring loaded one without a release rope, go with a metal plate if possible the plastic/glass tend to bend & can get into the prop when backing up, seen it happen. Jmo. good luck!