I'd get two of the "hook" pieces; one for halfway and one for about 4 inches from fully closed. The second one is nice to get air into cabin without blowing things away while taxiing or if parked in sun for short time.
Thanks Smiling Jack. I've dealt with Vince Frazier before with regard to tailwheel forks. Didn't realize he had these canopy holders also. Great guy---very nice to deal with.