WELCOME to the world of boat ownership.
Things will get better! Take it one step at a time, fix the leaks and the tounge. After you get the repairs done take the boat to a local park or empty parking lot and practice backing into parking spaces. I do that with every trailer I buy just to get a feel for how it backs. Every one is different and it usually doesn't take long to figure it out. Also learn to use the mirrors to back up.
Things will get better! Take it one step at a time, fix the leaks and the tounge. After you get the repairs done take the boat to a local park or empty parking lot and practice backing into parking spaces. I do that with every trailer I buy just to get a feel for how it backs. Every one is different and it usually doesn't take long to figure it out. Also learn to use the mirrors to back up.