The single most important thing,is to check out your area.If your trot line gets hung up,you may lose most of it.At best,it is a pain.Even if you have used the set before,something may have floated in.I have suddenly found a tree in a set that I have used for 20 + years.I set them to clear boat motors and as much trash as possable.I used from #1 to 6/0 hooks,as you target areas for different size fish.The same with baits.The bite slacks off,try a new depth,(top to bottom)a new bait,or several types.Sometimes it works,some times it don;t.peewee