we hav a bloodey great motorbike chain, which goes through the towbar and through the A frame ( for keeping ti attached to car in car parks......... and the big bit of chain through the a frame can be used to attach to trees / lamposts etc if the car isnt there. not the most hi tech option but sometimes the old ideas can be the best.
------------- everything can be fixed with WD40 and gaffer tape.
If it moves and it shouldnt --Gaffer tape
If it doesnt and it should-- WD40
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