Furry Lewis, Hi and
to the forum.
You're right about it being a good idea to remain invisible, but...
The most difficult part of using AS is entering your Max bid amount. To be a 'successful' sniper you should never pay to much for a win. Try not to let OTHERS determine what an item is worth to YOU. I'm referring to the *100-150% of current price* idea. Determine for yourself what max you are willing to pay, enter that amount, and don't look back till the auction has ended. If you will do that, there is no need to be at your computer 10 minutes before each auction ends.
I must admit to changing my snipe amount from time to time, but that should only happen when you have reconsidered what the item is worth... not because the current price has changed or who the other bidders are.
Hope to see you post agian!