I've tested Olympics 3 year guarranted stain product and its lousy. It held up on my deck for 8 months until it started to wear off the horizontals. I have a dog and kids though that helped wear it down.
I never reccomend olympic for staining decks. From everything I have tested personally, Ready Seal is the best!!
No lap marks, no runs and it can rain 30 minutes later with no problem.
If you could only apply it when the deck was still wet..LOL