https://tractorptolink.com/?gclid=EAIaIQobChMI1IiVxa7e2QIVRrFPCh2SiggKEAEYASA AEgLUhfD_BwE&v=7516fd43adaa
I grew up using PTO couplers that were held in place by either a through bolt or a clamping bolt. They were easy to use and I never had a problem with them. Modern sliding collar couplers are a pain because you have to simultaneously push and pull on it. There has to be a better way, but I don’t think this is it.