Hi Noel
I won't be around for this, but it has been suggested previously of a trip from Ballycotton to Inch beach (or Gyleen) or the reverse depending on the prevailing conditions.
There are plenty of small beaches dotted along this coastline to pull in and take a break, more towards the Inch side, so starting at Ballycotton would be preferable if conditions suited giving a longer first leg.
Not sure of the distance but it'd be a fair paddle, but not too daunting if conditions were ok.
Enjoy it wherever ye decide to go.