Hey simon
being a Noob

make sure you launch well out in the water, the tide is low about then, so only waist deep anyway. There are some yellow marker Buoys as the general guide to where you should be...
Drop your gear off at the first marker (1/2 way along beach) & park at other end,
lol youll figure that one out

launch with depower on !!!!
follow the others advice on kite size to save you & your kite needing repairs

If in dout - Quick Release Out ...
Cheeeeerssss