I am also looking into those and possible alternatives - here are some others that caught my eyes
use popup goals (6ft) and just cut the net off - seen them sold at £40 a pair - something like
and just found those massive ones on sales (£10!) at the European Bonka distributor - should be perfect to practice with the X-Class - ordered 4 of them (not delivered yet)
Now need to find a place where I can setup those (one thing to have a chair and a landing pad on the edge of a field - starting to setup gates may be seen as a tad more invasive
Well aye man im gonna start getting race ready ive got more battery powered lights for my standalone gates so gonna assemble more or them with the killa kwad cornerpieces.
I did them with the stick on strips initially that come on a roll but had to link them all together with bell wire which was a bit of a faff in a venue so i just bought the LED christmas lights with the aa battery pack and fed them through