I figured out the first one, yippieh!

But the second <img src="/ubbthreads/images/graemlins/confused.gif" alt="" /> Can the guard see the whole bridge? And there's no place to hide? Can I swim under the bridge?

Oh, wait... I have an idea.

<span class='standouttext'>Spoiler : </span><span class='spoiler'>I wait until the guard goes back into the hut. Then I walk for three minutes, well 2:59. Then I turn around and when the guard comes checking I act as if I come from the far side. Would that fool him? </span>

Der Mensch ist das edelste Lebewesen. - Das erweist sich schon daraus, dass ihm noch kein anderes widersprochen hat. (G.C. Lichtenberg)