I enjoyed that- especially the flat stomachs, long hair and dreadful film quality. An era of youthful  exploration and excitement to be sure. Being at the centre of it all, Im guessing they didn't realise the enormity of what surrounded them? Thanks Steve. 
Barrys gifts to Hovercraft are immeasurable IMHO.

Thanks. Very interesting. 

Barry appears in this documentary early on.

https://youtu.be/-hRSUjJFmCc?is=NPBLrDtdBW-rjb1o