The Island Single player. Built my first raft. Watched YouTube clip and covered raft with set down stone foundations 9x3. Put Ichthy, Dimorph and 3x Dodos on raft inside of cabin. Travel down a river around/through rocks and there are no dinos left on the raft. All spread out over the river at each rock that I passed. Understand if they were on deck but they were inside the cabin with doors closed. RAFTS for exploration NOT WORTH THE EFFORT if things don't stay inside the cabin. Spend more time now checking dinos are still where they should be, rather than just sailing along the river systems.