G'day Harry I can't PM pics but won't hurt for others here to explain why the old giant billowing spin is actually much slower than the newer flat spins. The bent pipe on the spin pole is just the camera mount.

Attached Files
Good spin.jpg (121 downloads)
Spin hardware.jpg (87 downloads)

Jeff Southall
Current boats
Nacra 5.8 1703 Animal Scanning Services
Nacra 5.8 1667 Ram Raider
Nacra 18 Square
Arrow 1576