We have 2 vehicles, one of which cannot be towed 4 down so we bought a dolly. Not the most fun thing to deal with but is not as horrible as some seem to make it out to be. I can get the car on the dolly and strapped down in about 10 minutes. I have my reference points figured out so no longer need DW to help get it centered on the dolly.
Make sure you get a dolly that steers and has brakes. My dolly has a pivoting turntable and hydraulic surge brakes. It was just under $1000 new. Some states require license plates for the dolly, some do not. We took our first trip with the dolly before the plated arrived and never got hassled about not having any.
When the toads get replaced in the next year or so, they will be something that can be towed 4 down and the dolly will get relegated to the shed in case we need to pull a friend's vehicle.