Longlining from the front solo is just as productive as any other way. What was your speed? Try to keep it at 1 mph, you can slow down or speed up as needed, let the fish tell you what speed, but you have to experiment to you find the zone. A easy way to do this is troll in a "s" pattern, which will cause the jigs on the outside curve to speed up, and the jigs on the inside slow down...pay attention to what side is getting bit and that is an easy way to tell how fast/slow the fish want it. Tie your double jigs further apart I usually run mine about 3 ft about and tied with a long loop knot.

I run 8 rods out the front, 2 13', 2 10', 2 8' and 2 5'6" with 6lb line and will wear the crappie out with this setup. Another way to troll is run a single 1/16 oz jig with a #3/0 or #7 split shot about 2 ft up the line...I catch a heap fishing this way as well.

Hope this helps...any specific questions let me know