Last night we did it in 18 mins dead, with the river. Very pleased, especially as the boys had been getting faster and faster without me!
Here's a couple of videos of river crossings, one for lads, one for lasses.
Lads: http://www.youtube.com/watch?v=AqxbgQ4kkEA&feature=channel_page
Ladies: http://www.youtube.com/watch?v=l2mfcHqpnfo&feature=channel
Enjoy.
