The Encore was a late 60's deBolt pattern model that used design characteristics from his racing models, most notably a very compact, streamlined nose with "cheek cowls" on either side. A few years before his Interceptor series featured a tightly cowled inverted engine and a streamlined platform.

His late 60's racing models (the AMA class was Formula 2) included the Continental 600, P-39 Cobra and P-51 Mustang; both of those could be considered sport/pattern and flew very well. deBolt's Formula 1 designs such as the deNight Special and Midget Mustang were pure racers.