Also you may notice that Items with strong early bidders tend to end up with less attention or watchers(in my experience), than late game bidfests.
Rather than spend time and effort chasing bids and making sure i am free at time xx pm or yy am, I just put down a max amount i am willing to pay. I either win it or i dont, if i win it, then happy days, if i dont, then it was too pricey and out of my control.