You bring up a good point regarding the trolling motor. Make sure you can stow and deploy the TM with the rod holder in place. Several guys have made that mistake. Also sit in your seat and make sure you can reach all the rods comfortably. My DF on the front was pre-mounted and I managed to get my rod holder in front of it so I have to look around a rod handle to see it. I am going to put a ram mount on it to remedy the problem, but I really want a bigger screen up front so I have not done anything yet. I have an HDS7 on the console and a small HB up front. The new HB Helix units look like a good deal, but gonna wait til after Christmas to do anything.
I have not had a problem with my rods moving when a fish hits one, however, you can bump it with you foot or leg and fool yourself into thinking you have several fish on. You do know this type of fishing is addictive, right??