Ritt, I run two rods (no boards) with 3 – ways or bottom bouncers. Once I make contact with the bottom…(3 times to ensure I am on the bottom) I crank the one that will be in the holder about 3 to 4 cranks. But this really depends on the area you’re going to be fishing. If you’re starting in 28 feet and know you are going shallower, sometimes I make adjustments right away…sometimes as I’m trolling.
I would recomment a second rod holder. If you don’t stop your boat when you have a fish on the rod in the holder, you’re taking a big chance of hooking another fish or worse a snag and losing the rod to the Croix!
I’m guessing you are fishing the rod in the holder too deep by your question. Although you should see some lure action in your rod tip while trolling, you will know when a fish is on. But if you are bouncing it along the bottom, it’s going to look like a fish is on…all the time.
In a nut shell…keep your lure as close to the bottom as you can…without bumping it.
There maybe other thought on this out there too, but that’s the way I run them.
Brian