Wintering in southern Utah

We're planning on spending the winter in Snow Canyon, Utah but the week we're heading out (about two weeks from now) is the same week as the Senior Olympics in St. George, so it's probably going to be packed with RVs and trailers. We need to find an alternate campground for at least one week. Can anyone recommend another good campground/state park/national forest within 50 miles of St. George other than Zion National Park (I'm thinking it will be packed too)? It's our first time out anywhere, so we're hoping to find a campground that has electrical/water hookups, at least for our first week out.



If any of you have good boondocking info in the area, it would be much appreciated too!



Thanks,



Jeff