Good advice on the tube, Hawk.
In fact that is the exact technique that has produced well for me in this type of cover on White Lake over the years. I like to use the HP hook in these situations.
My main focus would be jigs, though, as I can quickly cover more water with them- must be the tournament-angler-make-every-second-count syndrome. With the heavy jig, the idea is to get the bait to the bottom as quickly as possible, lift it maybe 6" to1', give it a few jiggles, then lift and move on to the next hole.
If there is a spot where the growth is even denser than the surrounding areas drop the jig right into the thickest of the thick. If there is a sprig of coontail or cabbage drop the bait in there, too.
For some reason, on one day the fish will be all over the jig. Next time they won't touch it, but will readily take a worm. Experiment.
I had a rod custom made for this type of cover and for heavy slop fishing. It's 10 feet long, made from 2 St. Croix muskie blanks, and you can lift a can of paint off the floor without putting much of a bend in it.
Although not legal in most tournaments, it's deadly for this type of fishing. It's amazing how much more efficiently you can cover water with that extra 2 1/2 or 3' of pole. Also, I never have to touch the reel. I can just pull off enough line with my free hand (picture traditional flipping) and drop the bait in a hole, by lowering the rod tip. Once the rod tip is near the surface, I feather the extra line through my fingers until bottom is contacted. Clear as mud?
Anyway, this rod and technique allows me to vacuum an area, instead of hitting only some of the holes or dense patches that will hold fish. Just ask my brother-in-law who tried to keep up with me on Gananoque Lake last fall.
When the long rod is not an option, I use a 7 1/2' heavy action Shimano Crucial flipping stick, Castaic reel and 30 pound Fireline. You don't play these fish, you get their head up and keep them coming.
CCB