I've been working with my filly for several months now on driving. Currently she's mastered driving from the ground in a halter. We've been working on serpentines lately, all from the ground of course.Shes been being worked lightly in a smuckers harness which is her normal harness. Though I believe we would benefit from a wider saddle because truth be told, though it is adequate in width, I would feel more comfortable if it were wider.
That being said I prefer leather but, considering it is the saddle I'd be just as happy if it we biothane because I still have my original saddle which is quite fancy as long as its wider than 4" I also need it to be cob, small horse, or very large pony sized, LOL.
Funny you should mention a collar harness because I've been in contact with someone in regards to one that would fit her though I'm very hesitant because I just know once I buy the collar shell change.