Here is Gonzo with the 'Tow needed to Wheelock' sign and us under tow! Not a very good picture, I know.. but it does just show the boat in front who very kindly answered our appeal! They were the first boat that went past!
We did try some bow-hauling to get the boat in a better position and in a place where it could be turned round. The method using a long stern line and short bow line worked perfectly! However, we were relieved to be offered a tow, as there was a fishing match further on 😱, plus several moored boats, including ones with aerials, a pram cover, etc. Not sure how we would have coped with them..!
Fortunately, it was a quiet day and we didn't meet any other boats - a big relief, especially on the windy, narrow bit approaching Wheelock. The people who helped us hadn't towed anyone before, but were happy to help and all went well
Thanks for your reassuring advice everyone - it definitely gave us the confidence to give it a go!