Stu, it seems that the shooting part is perfectly viable, you have clearly proved that.
Now try to make it looking more attractive.
Use nice materials and finish them well. You could use stainless steel rods or tubes, polished, for the stick, and nice multiplex or exotic wood for a hand rest and fork. Or you can use ornamently carved wood for the stick.
I believe you focus too much on the "cheap and easy to make" part. In order to have success, you must also make the weapon nice too look at. Which is currently not the case, if you allow me to point out.
It is very much OK to test the functionality first, but you are through that phase for sure.
Jörg