The cut-in-the-store idea sounds promising. Or 'delivered', if I beef up my budget.
I may be getting too ambitious: really I only need 3-4 tiny low tunnels, ideally rigid enough for one person to pick up or at least flip over. Portable plastic cold frames.
If I had some 4-foot-wide lengths of cattle panel, I would probably try to bend it "the short way", so that the circumference of the hoop would be 48", straddling a 3-foot-wide bed.
I do have one irregular bed that gets to 5 or 5.5" wide in one place, that would benfit from running a cattle panel "up and over" ... maybe even a walk-in tunnel ... no, I'm defintiely getting too ambitious.
But I would like to make some really sturdy 4-foot-tall tomato cages! And then a 6-foot-tall tall film-covered tunnel to enclose them all in late summer, to keep the rain off and keep them warm when nights go below 60 ...
... no, first I need room to do all that. THEN I could get ambitious. What might be practical in this yard is some 5 gallon pots on the deck in half-sun, plus a small plastic tent over them for Spring and Fall warmth.