An 8-foot storage space clearance height (is your garage-door frame even that high?) presents a real challenge for many trailers with stand-up interior ceilings, not just the Escape 15.
Yes, you might gain a few inches by removing the MaxFan (there are lower-profile fan-vents that will fit in that opening), but I suggest you look at that relative to the height of other roof penetrations (fridge vent, black/grey tank vents) before undertaking that mod.
Other 'tricks' that work for some include:
- reducing tire pressure just for garaging (limited gain, likely not good for the tires in the long-term)
- removing the OE wheels to install 'tiny wheels' or place the trailer on a low-wheeled dolly just for garaging (yep, a tedious chore)
Good Luck in your search for a happy solution!