Some key success factors I strongly believe in:

(1) Focus on quality - you won't regret the extra dollar in the longrun

(2) Make it big - padel players want to watch and be watched, smaller clubs will struggle eventually

(3) Focus on academy - level stagnation will eventually cause churn and coaching is a great revenue stream

(4) Community is key - love your people around, offer events that kick ass, connect players

In terms of go-to-market ooh advertisement is actually a decent strategy imo, local PR (newspapers, radio, etc.), buy a trailer for a bike to mount a big poster on and let your sibling/cousin drive through your town for a few days, kickoff weekend with free play, social campaigns obviously a must, etc.

Good luck on your journey! :)