Dude, I can put my bobtail almost anywhere.
However, if you're up my way, Here's a few.
Wausau, WI: The Vapour Lounge on Rib Mountain Drive. There's a huge lot between the Kwik Trip and the little shopping center it's in, plenty of room for multiple trucks. Also, once it's done, there will be a large truck stop across the street. Bonus, there's a Hu Hot and Texas Steakhouse all right there, too.
Waupaca, WI: Friday Vapes. This is one of my absolute favorite shops. It's in the same shopping center as KMart, so you have tons of room to park, even with a trailer.
Stevens Point, WI: Bobtail only. Mossity Vapes, another favorite. It's in the square downtown, don't take the truck to the square. But, if you take the 1 way road that loops the back side, also the truck route to the paper mill, you can park the bobtail in one of the large parking lots behind it. It's about a block up from there. Or, if you have a trailer, you could sneak into the back of the Shopko parking lot, and walk down. It's about 4 blocks from there. If you park overnight at the mill for a delivery, the downtown square is about 5 blocks away, too.
Wisconsin Rapids, WI: Point Vapor. It's in a large shopping center by Shopko, tons of room, but it does have some sort of tight turns. Should be able to get around with a trailer fine, lots of us do it, just watch the idiot traffic.
Appleton, WI: Bobtail only. Good Nature E Vapor on Northland Ave. My 3rd favorite shop. It's right next to Ace Hardware, and has a pretty good size lot, but I wouldnt take a trailer. It is just down the road from Kwik Trip, with truck parking. Bobtail over and check them out, plenty of room for the tractor.
If I think of more, I'll update. Not sure how often you get into Wisconsin, but those are some good ones if you do.