Encourage lots of climbing on different kinds of ladders -- rope, chain, etc.

Make a list of the tools owned by neighbours, particularly ladders, car jacks, axes, carpenters' tools, blankets, rope, first aid supplies, garden tools, flashlights, helmets and gloves.

From there, I needed to scramble over various single - or double-stranded cables and horizontal rope ladders before reaching the plank, which I now could see was hinged to the structure.