Thanks every one for your remarks. Iam just itching to get on a start line.
Next step is to rig the mast and step that. I have all the parts. Just need the time. doh
I think "yumay" have a wee small design falt with the setup in the photo. The dolphin striker needs to be attached to the downward adjusting bolt rather than just pushing on the head of the bolt.
In most normal forces it operates correctly as you have it, resisting the beam loads, until you put your foot on the stiker bar and lever yourself up on the boat after a capsize. Your leverage forces the bar away from the bolt and pops it off leaving you to limp back home to fix it ( from experiance ). You can solve it easily by either wiring the bolt head in place or drilling ( and tapping )another smaller dia bolt up through the striker into the adjuster.