I scrapped together a form-builder-with-payments using RoR and RailsAdmin last year for my club and ended up spinning it off into a pay-per-use SaaS[1].
As it turns out, forms are a fundamental aspect of a LOT of things, and offering free use tools can change the game for clubs or organizations looking to keep their data in one place.
Not every club charges dues, but those that do generally start off with a google form and a pinky promise that you'll send your dues after submitting the form.
Works for awhile but it's hard to maintain, speaking as someone who's had to do this before. embolt is my go at offering a member platform with a very low (the lowest) barrier of entry to getting up and running with paid registrations forms & an admin dashboard.
Still sticking with server-side rendering though, always loved that approach to building webapps and tools like HTMX & Turbo make it much easier to integrate with complex UX interactions.
[1] https://medium.com/@csofiamsousa/hotwire-turbo-and-stimulus-...