I went through the same exercise last year and it was a bit of a eye opener. A few things I found out.
1) The 410 was never designed to have a bow sprit and there is no retro fit for this.
2) A system has to be designed to allow for all the forces that will be at work at the attachment points.
3) We were advised that we would need the services of a marine engineer
to work out the loads and what was required.
4)The cost of reinforcing the inner hulls where the dolphin strikers would be was considerable.
5) It was far cheaper to go to a system where we could run a downwind sail from the bows of the boat which is what we ended up doing.
6) I spoke with the owner of a Fountain Pajot Baha 46 that had a bowsprit
installed and fail miserably. Once again the FP was never designed for a bowsprit
. The work was done professionally by a shipwright who put in a large backing plate on either bow to support the dolphin strikers and had removed the core
in the area affected. Long story short, the loads were so great that the inner hulls distorted causing damage. A marine engineer
was called in and calculated the loads which then necessitated a support plate across the interior
of each hull
supported by backing plates
and beefing up of the inner laminate where the dolphin strikers would attach.
7) could not think of to much worse then putting a hole in your hull near the water
line while flying downwind. It could really mess with your day
Greg and Sue