I'd love to have a way so the kids can do chicken-fights across the middle of the pool (mine is 4metres across, fibreglass) I think it'd be heaps of fun. (ie. try to knock the opponent into the pool, with one arm behind their back. Or used those padded staffs).
Have you ever seen this done before, or done it yourself? But what to use as the bridge across the pool?
--a long tube of galvanised steel, such as used for a street sign. ... but if it somehow fell in the pool, it would surely do some serious damage.
-- a long wooden post ... but the edges would be dangerous
-- a long tree tree (100mm or so ... 4" might be thick enough) with bark & branches stripped off of course
-- a slackrope (ie. wide flat-stapping with a ratcheting tensioner, such as you use to tie down loads on a trailer). I like this idea as it woudn't damage the pool ... but i imagine it'd be way too hard for two people to walk across, they'd fall in before the battle even begins. Unless there were a way to stabilize it, perhaps with criss-crossing ropes?