one question: how do u guys spot squat?

mark rippetoe said in his book squat is best spotted by 3 spotter (one on each side, one behind). since this is not really applicable to us (unless you bring 3 spotters with you to the gym), if there's only one spotter available, he/she should spot the bar in stead of the lifter.

"One spotter standing behind the lifter, leaning over with arms wrapped around and under the lifter's chest, is not only an embarrassing position but also a terribly ineffective and unsafe one."

yet, i still get tonnes of people commenting bout my gym buddy and my way of spotting. they claimed that we should spot the lifter.