Getting onto the Verizon Network

So I’m aware that one can’t go directly thru Verizon to get onto their network, but is there any other way to use their towers? I’ve tried AT&T as well as T-Mobile and both are next to nothing in my area. I read else where in the forum someone used Visible Mobile and got onto the Verizon network. Is this accurate? Is it possible to get on the Verizon network thru Straight Talk?