Where do you live? I might have time to build you something.
Also for another option if you end up in super budget mode but wanting a step up from pvc you can bolt 2" steel tubing to a 2x4 frame and make a pretty damn rock solid rail (or box if you wanna snag some hdpe from us plastics or somewhere else)
Jibs for cribs seems cool. Gore had a couple and they seemed decent, unskirted but who cares in the yard. Only downside is the length and price. 8 feet isn't very long imo. I feel like anything under 12 is too short, maybe 10 at a minimum.
Idk if they still build, quality was good enough for backyard, idk for resort but guru rails out of vt. Gore got some a decade ago. I don't think straitline or falline exist anymore.
KAB but that's out of the backyard league. Destoy out of maine but they're blowing up recently and idk if they'd have time.
Could also just hit your friends, dad, dads friends, relatives up and see if anyone welds.
What kind of rail are you looking for. Just a standard flat rail?