Rio,
Horses are expensive (as if you don't know it) We do have some large animal vets around here and they make house calls for a fee (don't recall but I am sure it would be less than keeping the truck around) possibly see if there is a local farmer or fellow horse enthusiast that would pull your horse for a flat fee. I have yet to find a decent paying part time job. All I have ever held that paid well were "40" hour a week full time jobs and they normally ended up at a lot more than that. I managed to get myself back in the rat race again and have been searching for something else. Currently the health care field seems to have the best shot at flex scheduling but even that field is no guarantee.

Aaron