Can't bring TT home because of neighbors parking in street?

I live in a subdivision at the end of a cul de sac and keep my 34' travel trailer in storage 2 miles away. My driveway is very long, 235', with plenty of room to park it while loading for a camping trip. Lately however, it's been really difficult to bring the camper home because of neighbors parking their cars in the street ( while their driveway is empty). Street parking is against our HOA rules unless you have a lot of guests over and your driveway is full of cars. I need the full cul de sac to safely turn around and back down my driveway. I have one neighbor who gladly moves for me when I need to bring camper home. However, the other 2 neighbors either aren't home, tell me no one is home with the keys to move it, or have told me "No, I'm not going to move it". Remember, their driveway is empty. What should I do here? I hate to turn folks in to HOA, but do I have any other choice since I've already tried to politely ask them first? I'm looking for input from camping folks who may understand my dilemma. Thanks.