Yes it is doable. "Where there's a will there's a way, right"?!
Figured I would share in this forum section how to fit one of these boats into a garage that is less than 7'. My garage measures 83" at the opening but I had a 1" lip of concrete that is higher than my driveway, therefore making my actual clearance 82". If you tried a caster mod or floor jac + deflated the tires all the way + removed the tower nav light ....the boat still will not clear that opening!
So here is what you have to do:
The tower collapsed position is defined by a cable at the rear of the tower base, you can see this cable when you collapse the tower. Open up the rear seat storage, stick your head inside, look up and you will see the mounting bolts for the tower as well as a rubber washer that is sandwiched by two metal washers with a 10mm nut holding them on the threaded cable. Secure the tower in the upright position so that it relieves the tension on the cable and gives you slack to work. Now grab a pair of pliers or vise grips so you can grab the threaded cable and then remove the nut. Do the same for the other side. Now your tower can sit inside the boat below the windshield giving you the same height as an SX without a tower. Just be sure to be extra careful when lowering the tower as it will sit against the window coping and use the tilt steering wheel I the highest position to give you temporary support so you can push the boat in the garage. Be sure to use some rags or towel in between the tower and window coping to prevent scratches or marring. You will need to build a simple support to act as a brace and hold the tower off the window coping and steering wheel. I'm using a pair of heavy duty plastic car ramps instead of building a support frame.
Hope this helps someone and illustrates that it can indeed fit!
UPDATE:
I made some extensions so that I can adjust exactly how low I want the tower to sit inside the boat. I went with a long bolt than necessary as it helps when I comes time to getting your arm up in there to there into the threaded coupler. I went with all stainless hardware. The thread is 1/4-20. Use blue loctite to hold everything together once you're ready and have your desired spacing
Here is the stainless threaded coupler. Half gets threaded into the tower cable and the other half the bolt and washer assembly threads into.
Here is the setup I use for the extension. This allows you to lock on the desired position.
With the adjustment nut spacing amount shown above this allows me to get the tower very close to the steering wheel in the tilted up position which gives you the lowest possible height.