(As demonstrated by Dan recently on the Cam)
Lets all go and have a close look at the trees and shrubbery on the riverside...
Ok, so we've looked at the trees and the shrubbery now, in fact the trees and shrubbery are a little close, no really they are getting close enough to get into the punt now...
Well the trees and shrubs looked like they would do a better job so best leave 'em to it...
And in case you were wondering, someone did have to go back and rescue his punt and it's passengers.