I was hoping one of the guys that does this regularly would reply,
but it seems they are either shy or otherwise occupied -
basically it involves fanning out long crappie poles in rod holders from the
front of a boat, and easing around prime spots with the electric troller,
keeping the lines almost vertical - some use jigs, some minnows or both.
I think it is pretty common to use multiple hooks per line, and 8,10, or more
rods, so some states aren't going to play nice with this. I think there are
about as many variations as there are folks who do this - some put rods out
the back, too. You can probably find a lot of stuff on here if you do some
searches on it. Good fishing to you, Jeff