My pre-bend. For this photo the day had desent wind. I want to say 10+kts. When I left the beach ramp and hoisted the spinaker it noticed the pole bending upwards quite a bit. So I returned and added maybe another inch or two to the bend.
On the Spitfire, I just have 2 bowlines looped over the end of the pole. This makes sure that I have a constant spinnaker luff length, which is important. (Grab the luff with a fist and be able to turn your wrist 90 degrees).
Also I think that your mid bridle should be tighter to keep the jib centred.
