Recently I rode a very young horse who is probably one of the greenest I've ever ridden. She's a large draft cross with a lot of energy and spirit. Though she's rather honest, she has a go-go-go mindset unlike any other horse I've rode. When I say she's fast, I mean she's FAST. Half-halts, sitting back, circles, bending, saying 'whoa' and trying to keep her calm and all the other usual methods don't work very well with her. She just has so much pent up energy, and as soon as someone gets on her back she feels the need to get it all out. When she walks, she tries to trot, and as soon as she trots, her stride gets choppy and she tries to canter. When she canters she's a speeding bullet. On top of that, she breaks stride often. It's like it's either stop or take off with no in between. Also, she spooks at almost everything and shies away from the walls (like I said, she's still young). I could keep pretty good control of her on the flat, but jumping was out of the question.
In my opinion what she needs is to be lunged to get out all that pent up energy, even free lunged (she's hasn't been lunged in a LONG time). She spends so much time in a box stall, and there are very few riders who would be experienced enough to ride her that don't have there own horses, so she isn't ridden as often as most of the horses. When I rode her I could literally feel her power and energy and the need to let it all out. She also needs a lot of work on the flat as well as someone's time and patience.
My question is, is it worth it to work with her? I know that with my trainers help and a lot of flat work we could make some big improvements... but at the same time I have no control of her lunging, feed, tack, or turn in and out. I do not own her so the only thing I can do is ride her and possibly do a little bit of groundwork. I come and ride around 2 times a week, sometimes more (I work at the barn so I get extra riding time in exchange). She has a lot of potential but a long way to go, and it would be best if someone actually bought her, but until then should I give it a shot? Or, since my barn just bought a bunch of new horses, most of them still young, should I try another horse?