Here's a few pictures of my setup. The rear is bungied through the dead eye and then clipped to the rear tramp lacing. The forward end slips into a pocket I made from a lacrosse head mesh. My pole support line clips to loops I have permanently affixed to the four cross beam corners between the tramp and hulls (you can see one of the loops in photo #2)....
Rear (Note: My original plastic "dagger well insert" broke the first time I went to use it so I switched to the metal hinge you see):
'82 Hobie 18 SE with '85 Nationals Prism (White) sails
'73 Laser HID# 3463