Since I have been flying model airplanes I have owned the following Dave Patrick designed airplanes

2 Carl Goldberg Extra 300
1 Carl Goldberg Chipmunk-(also a WM Chipmunk-same design)
1 Cermark Pitts
1 Carl Goldberg Bucker Jungman
2 Carl Goldberg Ultimates
1 Dave Patrick Ultimate

What I have learned is that Dave Patrick know how to design a model airplane and it will not be available to you (the consumer) untill it is perfect. (I just wish his planes were a bit bigger for gas)