I've got a smaller boat (a 16' stick steer) so we can only spider rig front and back also. For better boat control I almost always troll into the wind or current so anytime I set the hook or catch a fish my foot automatically comes off the trolling motor till we net the fish. I usually try to throw out a bouy before I grab the net then I will try to pass right back over that same spot. Sometimes many times and because of this I will usually catch more up front than my partner in the back because his part of the boat won't travel over where the fish are as much as the front does. BUT, this year a couple of times while spider rigging over 16'-20' fow with no structure in fairly clear water we had days where his very back poles out caught everything else by a huge margin. We would even switch over to the same setup ( jigs, weights & depths) but the back lines did continuously WAY better. We were catching all big sows out in open water that seemed to be attacking our "school of jigs" from behind and below. We were only running our lines 8'-10' FD around 1 mph so our our lines were actually only 5-6 feet deep. So, I'd say most days the one in front will do best but some days the one in back will catch more. If we were side to side who knows, I guess the most perpendicular lines would have done best??
Sent from my XT1635-01 using Tapatalk