In reply to rockwing:
1 x bivi per month, no excuses, rain or shine. Find a cool beach, forest, sea cliff, field, middle of a round about to settle down in the bivi bag for a night.
I had great fun going tubing. Go to a garage and buy two large inner tubes, ideally for a tractor. Super inflate them and then float down a section of river. Need 2 cars and drop one at part of the river you exit. Also would need a thick winter wet suit