When I put my boat on Brokerage with Sunbird yachts I berthed it in Ardrossan for a few months as there office was there, there were traffic light system for leaving the marina as the ferry used to come in at some speed and bank over, even if the wind was not strong, it used to heal over. There used to be quite a bit of swell at times leaving the marina, much preferred Larg's as you had shelter from westerly's due to the position of Cumbrae.