OK, acknowledging that this forum is 95% focused on slalom course skiing, SOME of which is done competitively in tournament settings, i think it is critical to define what meant by “waterskiing” (and what is meant by “growing the sport”)
Getting more registered members?
More prize money at tournaments?
More available tournaments?
Selling more boats and skis?
More people riding a ski/skis behind a boat of any kind?
If you compare our sport to wakeboarding, wakesurfing, or especially alpine skiing, the VAST VAST majority is done at a recreational level. Few have a membership to any national organization, most people are messing around with friends or family (groomed, powder, back country, off-piste.....no slalom gates involved right, but it still gets included in the sport of Snow skiing). Lots of $$$ for skis, jackets, lift tickets and resort accommodations plowed into the industry without a soul chasing gates. And yup in my MN city the bigger high schools have race teams, but in general, what percentage of competition vs total participants are we talking about?
I’d argue a general volume of participation is what supports the (snow skiing) industry and Leads to interest/support for competition. I think growing competitive slalom skiing HAS to have a corresponding massive increase in the base of people involved in the sport of waterskiing in the most general definition.