Can I Adjust My Torsion Axle Lower and Ride Down the Road?

I have to lower the tire pressure to about 10psi to move my boat into my garage - move it back 12 inches - then increase the pressure back to 50psi. I have to do this every time I move the boat in or out. I have only moved it in and out about 5 times and I am getting tired of it already. My original plan (when I was looking at other boats) was to modify my garage entry. It is not bad enough to go down that road now that I have the boat. I was literally waiting for some paint to dry on a project around the house today and was staring at my suspension on the trailer when a thought came to me. Could I lower my suspension on the trailer just far enough to get the boat into the garage without having to adjust it for going down the road. I think I have to lower the tire pressure so the boat sinks 1.5-2 inches to get through the garage door. I am wondering if anyone has tried this. I have thought about getting smaller rims, but I am already on 14 inch wheels and I think if I go with anything smaller it would look really bad (smaller tires would go with smaller wheels to get the lower height). If anyone has any other ideas, I am all ears.