Running trolling bags can definitely affect boat control. I have a 32' twin inboard. I know, not your ideal fishing boat but thats what I have. For trolling I run only one engine and put a 42" Beefy bag on the same side as the engine that is running. I have fairly good control with this setup and can get my speed down to about 1.5 mph. I started out with a smaller 28" bag and I had no control. I could only turn one direction! Not good! Contacted Amish Outfitters and they traded out for the larger bag.