Mike, you piqued my interest here. First you didn't mention what type of free flight modeling you are interested. FAI Free Flight has many categories FI A thru FI N. In as much as I have a handful of 1/2A engines given to me I have never tried gas or electric powered FF. Several years ago, I attended the Flying Aces Club Nationals held in 2022 at nearby Geneseo, NY. Everything was rubber power which I found interesting, some of the models were beautiful and would soar for several minutes. The contest was a mass ascension measured for time aloft pretty cool. I was later given a Comet 24" Phantom Fury kit made from somewhere back in the 50s I believe. I built the Fury and began learning about stick and tissue and flying FF. It's an interesting area that requires a fair amount of skill to get your model trimmed. Braiding the motor using rubber bands to provide the power and duration. Using a blast tube, making a winding jig, it goes on. If you're interested in rubber power check out Easy Built Models and go online for several sites as well. There's a builder Tom Hallman that has training videos. Recalling now, the Fury flew well, I released it following a measured motor wind, it has an offset rudder opposing the prop direction. It made one large climbing circle and headed toward a neighbor's house; the yards are large. It cleared the neighbor's home and disappeared; I found it down the street where it landed on another's front lawn. I concluded the build a success. Rubber powered free flight will probably be where I'll end up when CL becomes too difficult for me. In the meantime, I'll continue to attempt to "master" the elusive pattern.
Steve