Here's Mary playing on the Westbourne Ave building site. They didn't used to bother with health and safety in those days, so a building site was a playground...
We built a waterbike at Venture Scouts to take part in the 1982 Emsworth Water Bike Races on the Millpond. I was selected to ride our machine. It broke down after about 50 yds and I never finished the race. Good fun though...