If you can stand a bit of cold, there's some absolute diamonds to be found out there, with all the beauty, and none of the crowding. Buffalo Bill State Park on the lakeshore is just such a site. 

There's a number of sections, divided between one for RVs and two for Tents (drive-in). While the RV section features electric and water (there's also a dump station on the way out/in), all the sites have picnic tables and a fire pit.

The big draw, of course, is the gob-smacking view of the lake and surrounding hills. There's a public access boat launch, but in the stillness of late October, nothing spoiled the absolute stillness of the spot.