Yes Don,
Dean Torges used to sell a handle of sort,that fits on the blunt end of a rasp.
With a little practice,the technique of using the meaty part of your palm and your fingers as a stop control,on the end will work well.When i use my hand on the tang or handle end,i just cup it in my palm.I dont grip it very tight,unless im using it to scoop material in a concentrated area.
This brings up another point i didnt mention.
With a bit of practice,a Farriers rasp is a very versatile tool for bowyery.The small side edge can be used much like a toothing plane for scoring for a gluing surface as well.You have the rough side for hogging,the smooth surface for finer removal,you can shape handles dips ,fades and tips with it and when using the edge and some experimentation and practice,you can use it as a scraper as well.Its all in the stoke length and pressure used.I have made complete bows with nothing more than a Farriers rasp, sandpaper and a pencil for tools.LOL
Its really not that difficult.It sounds much more difficult in print than in person.But then again,ive used one for over 30 years and use it for a living.LOL