We do not care for the preferred loops because we find them a bit tight and less spacious than other loops. Twice we've had to ask neighbors to move a vehicle so we could make the swing into our sight (which they were happy to oblige). We find the full-hook-up and premium sites to be much larger and spacious. You can ask during check-in for an easy back-in site and the CMs will be happy to do the best they can based on availability. (One reason we never complete check-in prior to arrival is because we do not want our site pre-assigned. We 've always been able to choose a site we are pleased with.) You can google for some great images and videos and advice, or download an android app that has info for each site. You Tube has some drive-through videos of various loops too. Check out the one of the 200 loop, that should give you a good idea of the sizes.