I think you're asking for trouble, in the form of tangles. With a motor boat you can keep the boat in gear while fighting a fish, to keep the lines and fish straight back. But with a rowboat, a fish on the line will stop forward motion, and you'll have 3 lines sinking, and/or getting tangled with the fish you are fighting. I'd say it's a bad idea. I get tangles with just 2 lines out, 4 would be a nightmare!