We had a tow dolly that steered way back when we had the Class C. Never had them loosen up after tightening them for a second time. Did have one strap tare though. Thankfully it never snapped. We were able to get one ordered and in before we had to take off six weeks later. Visiting family back east at the time. With a steering dolly you must lock it prior to putting your car on it. Once set and strapped you release lock so it can turn.
A note about a steering tow dolly. The roads pounded it well and I had to realign it three times on out trip. Noticed it the first time when I saw the excessive tire ware. I watched for wear closely at each stop.
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