Besides flipping docks and casting, long line trolling is the only type of crappie fishing I do. I am sure many will argue against it because most like to spider troll but I have had so much luck doing the long lining that I always figured why switch. I run 12 poles at a time. Six up front with me and six in the back. My front poles are 14', 12', and 10'. They have even longer but I am to cheap to buy them and what I have been doing is working. My back poles are 7' and have them angled differently to keep them running two foot apart.
I am sure your first thought is how to keep from getting tangled. It is pretty easy actually until you hook up on a large bass or striper. If that happens, get your other lines in or prepare to re-tie some jigs. I troll as slow as possible. The slower your motor will go the better you will do. Wind is your enemy ecause boat control is needed and on windy days, I am usually in trouble unless I can find some area that is out of the wind. This goes for all fishing though. When I make a pass and want to turn, I usually reel in my inside pool on the outside. It tends to get tangled if not. Always be prepared for a tun fish because we almost always hook up on a turn fish. Once I hook a fish I will pull him straight in. If she gets across a line, I will either lift way up or down to pull the fish across or under the other lines. Once I re-cast, you can either make a god cast or reel the other two lines in and start with the inside pole.
If you want to make some money bet your partner in the back because the outside poles will catch more fish almost everytime. I have fished with guides and not and no matter who is controlling the trolling motor, the front always catches more. I wish I could say it is a talent thing but it is actually the fact that crappie will fan out away from the boat as I pass and then start to come back in afterwards. My 14' poles are hit more often then not before any other pole. You catch a one pounder on a 14' pole while trolling and you will think you have moby dick on the line. I also leave my back lines a little farther out giving me better odds to pull fish from them.
I love fishing this way and catch a lot of fish doing it. You get fish on the stumps or up on the flats or staging waiting to move up in the shallows. When I pass over stumps you can figure I have a jig in the face of every crappie in a area about 33' wide as I pass. I may have to turn around a lot when I find the fish sitting on a certain brush pile but who cares. I once caught a boat limit and never moved the boat more then 50 yards. The fish were sitting on a point and depending on the sun or clouds would stay right on top or move off to the edge. I would go over and make a long sweeping turn and hit it again. My wife and I did this all day one day and caught a limit doing it. Good luck.
"You should have been here yesterday!!!
Jigboy