The mop works great!
As an alternative, I am wondering if one might take a dowel (approximately the length of a golf club), set it against a stationary vertical object such as a door frame or floor joist (as I do down in the dungeon), then, as one would go into impact position, press the dowel against the vertical object as if in an impact position.
Once you are in a set postion you can lean into it a bit one side at a time. It seems to help in finding a grip position with each hand to take the best advantage of applying some force. It also seems to help isolate extensors.
I just tried it last night and kind of got carried away. With help from Mr. Carter I found it may assist in helping formulate my aiming point a little more clearly. I even tried it with the PBS. I might have to try it with a TALY!