I think I've cracked it - don't drink the night before and there is a chance of running the next morning - Camber Sands beach is vast and wonderful - if I can stop looking down to pick up razorclam shells or stopping to take pictures of degrading groynes I can run for hours ...
The light first thing on the run was also amazing
Now groynes have always fascinated me - was it just a schoolboy snigger at the name or was it more ? A quick trip to Wikipedia reveals the following essential facts -
Groynes may be classified as attracting, deflecting or repelling. Attracting groynes point downstream, serving to attract the stream flow toward themselves and not repel the flow toward the opposite bank. They tend to maintain deep current close to the bank. Deflecting groynes change the direction of flow without repelling it. They are generally short and used for limited, local protection. Repelling groynes point upstream; they force the flow away from themselves. A single groyne may have one section, for example, attracting, and another section deflecting.
Fascinating and useless information ....
Best of all you sometimes get terminal groyne syndrome where sand doesn't do what it is supposed to do
So I managed 3 runs in 3 days - the answer seems to be no alcohol, flat vast beaches and be careful at all times of terminal groyne syndrome ...