So I know that collection doesn't "come" from the bit per say, that (at least to my understanding) it comes from the horse accepting the bit and working through its self from behind. And I've never actually ridden a horse that was genuinely collected (that I know of) so I really have no knowledge base to go off of here.
However, I'm just wondering if a horse can collect naturally if it really likes the bit being used and if the rider's hands are following the horse and encouraging "correctness" to the best of the rider's knowledge...?
I'm just caused to wonder because since I've switched my mare's bit to a ported Pelham (which is basically why I'm asking since the "snaffle" part of the bit has enough poll pressure to "force" a picture [and possibly a feeling?] of collection) she's become so much lighter in my hands and she's actually stretching into contact with the bit which is something she's literally never ever done before. She's also salivating a little with this bit, which is just made of stainless steel, and she's never salivated at all on any other bits I've used with her.
She also has been so much gentler at the trot, her trot is generally like a jackhammer but with this Pelham I can encourage her, with a little contact on the snaffle rein, to really smooth it out - not necessarily slower but much smoother. When she's trotting like that, she has her neck stretched out really long and low, no crazy up in the air stuff like she usually does.
I guess I'm just concerned that I could be "forcing" her into a false frame and that maybe I should really not have contact on the bit when we're trotting because I don't want to encourage improper muscle building (and I don't really care about collection or not in the first place, if this is collection that's just a nice side effect)...