They needed a longer ramp off that pier. I think some of them might have been able to glide a bit better if they'd been able to get above stall speed!!
Fun video!!
Hang Gliding Association with both National and Local Forums
https://ushawks.org:443/forum/
ARP wrote:I competed in the 1974 and managed a few yards but most of the height was used to gain flying speed before the inevitable dunking in the briny.