As good as a jig and pig is, there are times when bass will ignore them. The first thing I try then is adjusting the fall rate, either by going lighter or heavier with the jig, or just switching out the trailer. If that doesn't work and I want to continue targeting the same cover, I switch to a worm with the weight pegged. It's basically the same presentation, but a different profile. If I'm targeting deeper structure, I'll grab the old ball and chain and start with a tube or other plastic that resembles a craw and switch to a worm if that doesn't work. Sometimes all it takes is getting the bait up off the bottom. If you haven't guessed, I'm not a big fan of drop shotting.