Sometimes, while slowly trolling ...often a wedding ring w worm on a dodger...I'll get a strike, lose it...so I let out a couple of pulls and will get a second successful strike. I suppose if the fish got the worm the first time, it doesn't strike again. Depends on how aggressive the fish is, I guess.
BTW: I was losing more than half my hook ups on wedding rings so replaced hooks with double Gammies or small trebles...resulting in more fish to boat. I'm talking rainbows here.