I don't see it as stolen ideas - just sharing best practices and then folks deciding which of those they want to include in "their" sling that they make their "own". Every idea I've had started with seeing something someone else did and either doing the same or looking for other options. Saw the quad for sale for 30k on FB, and it's huge list of mods. Looking on slingmods to see what they were and for me it lead to the start button and ebrake handle upgrade.
Put a deposit down Wednesday night on a trailer that's a combo of ideas from different trailers I've seen. Guy asked color and I said cheapest we could do as costs in metal are up $600 from my original quote 1.5 months back, he said BS we're doing black at least some yellow pinstriping". Should be done next week!