RE: Why is CL losing popularity?
I started flying Control line in 1966, I bought my first RC airplane in 1969. RC cost 8=10 as much to get in the air back then. Building RC was more work than control line planes.
I honestly think that flying RC is much easier to learn especially today with all the simulators, I own 20 or so RC plane and about the same number of Control line planes. I love to fly both. When I fly RC there is always the fear of losing control because of things you have no control over.
When I fly Control line there is always the knowledge if you push it to the limit sooner or later you will end up inverted 2' off the ground with a dead engine.
But for my money if you have a friend to fly with (flying alone just isn't much fun) there is nothing like holding the lines of a good stunt plane and putting it through the pattern.
I just wish there were more control line clubs around, I love flying control line, and for those that think it is not a challenge take your radio control airplane bring it strait at the ground at 90 miles per hour and pull it out 3' off the ground. That will separate the pilots from the want to be pilots.
You learn RC more than 100' off the ground often at less than 40 mph, you learn Control line at less than 60' and most of the time less than 10 off the ground an speeds above 60 mph.