Should you tie a yellow ribbon in the tail of a "proud cut" gelding?
I'm not entirely sure why you have to tie a yellow ribbon in the tail of a stallion... (if he's out on the trail, shouldn't he be well-behaved enough that you don't need to worry about him/warn people about him?)
But whatever the reason may be, wouldn't it apply to a proud cut gelding just the same?
Not really the reason they do that, that I have seen is to let other riders know he's a stallions so if a large group of riders others will know that there is a stallion and keep mares away from them to deter of any bad situations proud cut gelding don't have to cause they are not nearly as unpredictable as a stallion maybe they can get scatter brained but usually stay with the rider so I have experienced with my gelding who is proud cut.. the only thing he has done is he will pick a mare out on the trail ride and then the other geldings get his ears pinned back at them as a territory thing but nothing more..
I put red bow on my mare's tail because she's extremely good about giving kicks pretty much in any position (except when the horse is right in front of her nose). Thinking about putting one on her mane too, because she bits and strikes too if anyone is too close.
I've never seen people put any ribbons on studs (and I rode with some). I guess it's not that popular here. But I think it's a great idea as it's always better to be aware of stud presence.
They can be good ideas to save your butts should an mishap ever occur.
But you're right - there's no reason for them to ever mis-behave in any manner that any other horse would (ie/ get sexually excited) if they've got the right training.