A 32km day trip round Ailsa Craig in the outer Firth of Clyde.
Tidal streams between the Ayrshire coast and Ailsa Craig are generally weak, towards the Craig they are about 0.5knots at springs. The NE going flood starts about +0535 HW Greenock (-0530 HW Dover) and the SE going ebb starts about -0050 HW Greenock (+0030 HW Dover).
Remember to take a good broad brimmed hat.
A little rockhopping