Two options I would recommend with a 10 year old tow bar.. One I Will take advantage of. though I'm not yet sure which
1: If you happen to be in eastern NE.. Pender is about an hour north of Lincoln. the shop is just off the main road,, Three levels of road
You turn in a nice blacktop road that runs past the plant, And pull into the BLUE-OX Campground.. Nice 50 map sites, Hookups, Campfire ring (Central) if you are there during the busy time.. Hike to the plant about 100 years on a not very good dead end road (you are beside the building) connect to Blue-Ox Wi-Fi.
And make an appointment.... Oh, you will like the rates at that campground ($0.00 for customers) only downside.. There is a stockyards not far away.. if the wind is right you get that "Good old country Air" (Sinks something fierce) does not bother me.. IN my youth growing up on a dairy/swine farm, I shoveled tons of Poltical promises myself (No that's a joke not a satatement)
The other is Quartzsite in the last half of Jan.. Visit the Blue Ox Booth and make the appointment there.