A question for those who have been there: I booked a site at sly park that says 18' Motorhome - would my 20' popup fit along with midsize SUV? And what's the difference between sites - some sites are marked as 15' trailer site or 2(or 3 cars), and some are motorhome sites? I was going to book 15' trailer site first since it had better views and close to water but the description says "mildly steep", and another one "gently steep" so I decided to book motorhome site that is flat by their description. Bigger sites (especially water front) are not available for the dates I want or too far from the lake (close to the road). Thanks in advance!