Q-"What are, in your opinion, the weakest links to sailplane racing?"
A- Poor instructor experience level nationally, and poor fleet nationally speaking.

Soaring is not fostered by the clubs in the US, gliding is. If you can't soar, you can't race. A newly minted pilot must choose between a 20-100k investment and teach themselves to fly X/C or earn an instructor certificate and spend the rest of their days in the back of a 2-33. (this is why membership is down.) The self starters who spend their money to buy a private ship care little about fostering a fledgling pilot unless they want to buy a glider and try to keep up. The whole system is out of wack. Clubs that won't invest in high performance equipment and advanced instruction miss the opportunity to sustain membership and improve the sport. The instructor group refuses to acknowledge the problem because it exposes their inexperience in x/c and time in high performance a/c. They have no desire to invest money out of pocket as club members in the higher performance a/c or the financial investment required of themselves to become x/c proficient.
Take a look at the JR. program in the UK. Do you think they expect those kids to buy their own gliders and figure it out themselves? No, they have real instructors and real sailplanes. If you have a large number of x/c proficient pilots with a bunch of high performance gliders laying around the racing part will take care of itself.

-Doug