Fiona Lochhead: Easy access from the B866. Park in a wee layby and walk down to a rocky beach. Stunning views over the Kyles of Bute. Perfect wild camping site, but take your litter away with you - don't black bag it by the road. The gulls destroy it.
Apart from the usual hazards of wild swimming, this is a safe spot. The greatest hazard is the locals if you don't take your litter home.