Knockers? I like big ones? Oh wait, nevermind.
Used both the one that slides down the line and has a string to pull it back and the telescoping pole with the meysp spiral curly Q. Both commercial store bought ones.
That last one is at the bottom of lakeside quarry if anyone wants it. I can't remember if I lost the slider or if it's in our storage unit somewhere.
Haven't used them much since I got the yaks, so +/- 8 years or so. Just paddle over and fall out. Then you can stand up and get your lure
I've also done the wrap line around my hand (protected by glove or towel) and pull, similar to Henry David's stick method. Since I mainly use mono and sometimes a floor leader I'd add 'line breaks' to his list of possible outcomes