Don't give up coursing your ridgeless. If you have coursing clubs in your area they more than likely will allow your ridgeless dog to course at "fun runs" - runs held from time to time to allow ridged dogs the opportunity to practice. Since there are no awards handed out your ridgeless would get to have fun running, you would get to enjoy the beauty of watching your dog course and you'll get to hang out with folks that have similar interests....RRs. :-)
Back when I lived in the Dallas area, our club held fun runs about 3 or 4 times a year. We would let any dog of any breed try coursing at these events. Very funny watching a Yorkie try to course a bag that's larger than the dog itself! :-)
Pam