Yes you can spider rig and long line at same time you just have to figure out how to maintain the depth you want on your long lines they are the hardest ones to figure out depths. I like to spider rig my fishing buddy likes to long line so we usually start out doing both if one is a lot better than the other we may go to just that or days when long lining was the best I just sucked it up for I'm fishing for pleasure not just for the food. Maybe this will help on our rigs 6 lb line with a 1/16 oz jig will go about 7 to 8 ft deep at .08 on the long lines ok here is wher it gets tricky if your needing to go slower you have to figure out how to keep that bait from going to deep or how to get it to go deeper if the fish is deeper so with those 2 numbers you should be able to figure out how to manage . We have done real well at both at the same time .