Hurricane0226
We have done both and prefer the four down. Four down is very easy to hook up. With the dolly you have to hug the front tire to properly install the strap. Not a major problem on a nice day but real ugly in the rain and mud. If you do not get a good placement of the straps they can get eaten up and then have to be replaced. Many campgrounds do not have space for a dolly and some even charge to store one. As said the big plus of the tow dolly is that you can tow different vehicles. Good luck with your decision.