I saw a photo recently of a stroke survivor in a wheelchair who was playing pool using a standard bridge to help with the shot. There is a much better device to use for one-handed pool players---standing or seated in a wheelchair. These can be made for under $5.00. There are
similar ones on the web but they cost a small fortune. A woodcarving club made several of these for Don and his speech class buddies, but anyone who is half-way handy could duplicate them. The body measures 1 3/4" x 2" x 3/4" and the wheels are 1 1/2". The hole fits a cue stick. (This cue aid is photographed with a pencil, not an actual cue stick.)
Also, a Google search can help you local billiard leagues for persons who use wheelchairs.
Source: My Aphasia and Stroke Caregivers Guide