Touring Caravan Site near Wemyss Bay Scotland

Please can anyone reccomend a site that takes Touring caravans very near Wemyss Bay, Scotland. We are hoping to visit my niece on Isle of Bute on our way round to Campbelltown. We were hoping to go to the Island as foot passengers (because of the cost of the car ferry) but cannot seem to find a site. A CL would be perfect, but anything would do. All the ones I have found are static caravan sites :-(. Any help appreciated. Thanks