Towards the end of last season took the rib for a trip around Old Harry's and ended up stuffing it into a rather large wave, the odd one pops up now and again

Ankle deep in water and a bit wet and shaken but recovered ok and made our way to Swanage, made a temporary repair.
The time has now come to get ready for this year and thinking about making the repair more permanent but having looked at it today suspect it might be one for the professionals to take a look at. Any thoughts on the damage and possible repair options will be gratefully received.