A week ago on Charleston I got 13 lakers in some of those places Dartee suggested. The trout were anywhere from 20 ft to 70ft. The majority around 30-50. By Sunday night they seemed to go deeper and will continue to do so with the warmer weather.
I have given up on downrigger fishing Charleston. Never liked it in the first place plus the bottom is up and down like a yo-yo and trout often hold tight to shoals. I met a guy at the ramp who told me he lost 3 cannonballs the first week!
Jigging is difficult because of holding the boat in position While fishing over deep water. I recommend heavy jigging spoons like Champs, Kastmster or Hopkins. You can pull a tube over them (like a condom

:lol )
Early in the season to troll I simply use a bass casting rod with a nice long handle and reel spooled with very thin 20 lb test/6lb diameter no stretch line (very important for feel). I can get 150 yards on it. I tie that to a 3 way swivel and a dropper of 3 ft with 2 ounces of lead and then a leader of 4 ft. You need a long dropper for the sinker mainly because if the lure even ticks bottom you end up snagging a zebra mussel or two. I can fish this down to about 50 ft on a slow troll with half the line out.
If I find fish suspended I use a similar bass rod with a bigger (but not huge) Penn reel and 10 colours of 17 lb leadcore. I know the depth the leadcore sinks to.
I like Panther Martin spinners because they are different than the spoons everyone else uses, they have a "sonic" pulse and you can troll them much slower than any other spinner.
I am going to experiment doing controlled drifting in the wind (using the electric to make adjustments) with a fly rod and leadcore. I will use a very thin spoon like a Lake Clear Wabbler as an attractor with a 18"-24" leader with a streamer fly or threaded minnow or worm behind it. The Wabbler will flutter at a snails pace and get deeper with less line then other methods. No need for an expensive rod/reel a cheapy rod/reel from Wamart or CTC would be best just make sure its something like an 8 weight.
BTW you can bait fish for lakers too.