The question is.....
How can you promote something which is, quite honestly drab at best right now?
Promoters from week to week don't know who will be riding.
It's time to get back to basics...upright, reliable bikes, local riders if possible who are willing to give up an hour or so of their day to take their bike to local schools and give a talk about this wonderful sport.
It's not hard to promote this sport, it was done quite well in the 80's/90's but the powers that be seem to just expect us to turn up week after week to watch what is essentially 15 minutes of "entertainment".