We were fairly happy with the weBoost...until we tried a MIMO. A MIMO antenna is $30 on Amazon, versus the weBoost which sets you back hundreds. The key with the MIMO is that it only connects to certain hotspots. When we got ours in 2018, it was the latest Verizon Jetpack that was compatible, and that may still be the case. Fortunately, Verizon has the best nation-wide network in my experience (though I hear T-Mobile may be catching up). We've been traveling the U.S. for the past seven years, and Verizon Jetpack + MIMO has given us the best coverage in remote areas.
P.S. If you don't have the Coverage? app, then it's well worth the couple of dollars. It allows you to check coverage from the major carriers in the area you're hoping to camp. Of course, it's nice to go off-grid. But for those of us who work full-time, you gotta do what you gotta do.
P.P.S. This is not a new problem and we don't need to reinvent the wheel. Working-age RVers have been tackling this problem for years. Mobile Internet for RVers and Cruisers is the preeminent resource for U.S.-based travelers. (Not affiliated, though I'm friends with the owners.)