Martha does not understand physics

Here's a description of the contestant's attempt. Someone's probably working on collecting some images to illustrate it.

Martha collects a variety of items from the garage which she believes she might be able to use to stab into the ground and drag herself forwards, while sitting in the kayak. She quickly discovers that this strategy is not going to work, due to friction and poor leverage. She then realises that she needs to create a slippier surface for the kayak using a tarpaulin and water, but does not have enough time left to realise her plans, travelling just 140cm.

(Written by Karl Craven)