Yes, this is a great time to troll for crappie. This pattern will generally hold through summer. After crappie spawn, they move back off of shallow structure, and in my experience do 1 of 2 things. 1.) They will move out in the middle of a spawning cove and suspend, often times in areas devoid of structure, but they will hold at a specific depths. I start trolling at whatever depth i can see the bottom plus 5 feet...meaning, if you can see bottom in 6 feet of water, i start at 11 feet....thats general, and just my own little way to pick a starting point.
2.) Others will move back out to the main lake areas, and will hold on points with brush and various other structure. Main lake flats, points, islands, humps and rolloffs....areas where one might troll up some walleyes will often hold crappies, and giant ones at that. Repeat ability is key, if you pick a fish up, make a mental note of the depths and type of area you are in.
The other nice part about trolling this time of year is that you will catch tons of fish, regardless of species the action is usually quite consistent.