Thanks for replying Doreen,

I'd love some help.

I'm heading off to Whitworths to buy a new bock to go on the centre
board case...

I'm thinking something like the Ronstan RF51110 Series 50 Single,
Becket, Universal Head

My next dilemma is the type of block for the Mainsheet that's attached
to the footwell... does it need to have some locking mechanism - or is
it best to have the sheet running free - I find this pretty wearing on
the hands.

Any help much appreciated.

Oh, I'm also thinking of a wind pointer for the top of the mast...
worthwhile?

Sam