You can use more than 2 bags. I do it all the time in early spring. I have also used a big drift sock if you have one off one side just rig the rope like a trolling bag. I have a big diesel and its hard to slow that thing down with all the torque. In a pinch you can use a sturdy 5 gallon bucket. In the early days I had to resort to that to do anything to slow down. Good luck.