Help: Need to build a small suspension bridge for trail competition

Hi all!!

I build XC and SJ fences.
I’ve been asked by two groups (one who already hosts trail competitions) to build a suspension bridge.

[B]They have asked for it to be 3’6" wide and 10’ long.
1st, are these good stats?

I can’t seem to find any good free standing pictures of these bridges.
I can find them when they are built into ditches or rocks like this:
http://content.yudu.com/Library/A200…sources/18.htm

but I need one that is free standing with a side view so I can look at it’s construction.

I’m not looking to build a high one. And I thought I found one a few weeks back that was set up on 3 supports.
like this:
http://i128.photobucket.com/albums/p…ps1adbd085.png

[I][B]anyone have an pics they could share?

[/B][/I][B]also, from what I have seen it looks like they are all just plain wood. I would want one that was painted over with truck bed liner to offer grip. Is this a good idea or bad idea? Seems like if it was a good idea I would have found some with that design…

[/B][/B]