Due to all kinds of complications with tides, marina locks etc here is the new plan for Carteret..
Friday - Meet Yarmouth 9am. Depart straight to Guernsey for Lunch, Beer, fuel and a look around. Spend 3 hours there and leave at 5pm to head to Carteret which should be just as the lock opens.
Saturday - If its a nice day which it will be - Jersey for lunch, If for any reason its not were go to Alderney and have a general run about.
Sunday - Leave at 10am for return trip. This will work out well with slack water as well.