Step by step DIY instructions (and cost breakdown) for the concrete mesh and rebar trellises. Maybe just the metal/mesh mounted to the top of the fence? Decorated with something to fill in the space until the hops cover it?
Revitalize a Path Rebar (or another heavy-duty metal rod) creates an uncommon archway entrance and gives climbing plants an unusual lift up. Think outside the arch for inexpensive materials at yard sales, Re-Stores, or from the depths of your garage.