If you have Verizon...and your house is in a dead spot...call customer service and make noise about switching and then ask about a femtocell, or "
network extender" It's a gizmo that plugs into your home internet, and acts as a tiny (
"femto") cell tower in your house. Retail was about $150, some reps will give it to you for free, others will give a deep discount. It depends on who you talk to and how good a story you can tell. That doesn't help on the road or on the lake, but it works great at home. Other providers may have similar deals, I only know about Verizon.