The great thing about wingers of course, is they throw birds! Bumper Boys normally do not. Normally?
There is a bird basket attachment that attaches to a Bumper boy, that is designed to throw, no..... launch pigeons. It does work as advertised. Some have had success with placing small ducks in the basket attachment, used a high powered load and "thrown" the duck. I personally have not tried this.
But it is a pain to run out there and reload the winger. The Derby Double throws 2 dummies and other BB products throw up to 12 dummies, without reloading.
Wingers certainly have a place in your training tool box. There are positive and negative remarks about all of these products. Trainers need to determine what they need and seek that equipment for their dogs benefit.