Confronted with snapping of navigation lights while sailing with my gennaker (asym Spi) due to clipping of the tackline I decided to attach a light bowsprit.
I used a aluminum pipe (strengthened inside with two other profiles) of 80 cm.
Attached two spinnakerboom-caps to both ends.
Replaced the anchor roller for a tube with a welded ring. Attached a fitting on deck.
Gennaker works better this way and you don't loose your navlights all the time.......
Hans Kesteloo - SO29.2 Puck - Pays Bas