Thanks for the constructive comments-www.
After becoming airborne of R22 and realsing I had a problem my immediate thoughts were either turn 90degrees and aim for beginning of R31 or land on the beach which I knew would be busy.I decided to turn for 31 very conscious of my airspeed.I knew from the fields layout that if I could not line up with 31 then at least I could make the grass strip surrounding the runways.
There is no doubt I could not have returned to R22.I have had "thumped"into me the importance of maintaining airspeed or else.
On reflection now sat in a nice cosy office,it is easier for me to look at the situation and learn from the experience.