I thought I liked Crappie fishing until I started spider rigging/trolling. Now it's all I want to do when I get off work. You'll need to figure out how to keep your bait at the correct depth. That will depend on weight, boat speed, line, etc. Probably my best tool, other that the line and hooks, is my Minn Kota Ipilot trolling motor. It is a little pricey but it keeps the same heading and speed when prompted which allows me to hook, land, dehook the fish and get back in the water without worrying with the trolling motor (assuming there is nothing immediately in from of the boat).
They didn't fight at all, just pulled real hard trying to get aloose.