((Was waiting for Angder to post. Looks like he lost interest.))
While washing his dirty, bloodstained clothes (still in the pond), Geoff realized he didn't think this through very well. He'll have to wear soaked clothes since he didn't have extra, and he was far too self-conscious to walk about naked. But that was a very trivial problem, especially compared to what they dealt with since the crash.
He remembered he did have clothes in his backpack when he got on the plane, but they didn't find that, did they? His headache was so awful then, he knew he was doing a cruddy job looking for supplies, and he was so in shock he completely forgot about his stuff... Maybe it fell into the ocean. Or maybe someone else found it, if they missed it. Either way, there's no way he can walk for days back there to check for some stupid clothes.
He swore under his breath and quickly put his clothes back on as soon as he stepped out of the pond.
He then grabbed his spear and walked out of the temple to take a look around.