On the first trip to Tesco's with hubby, before he WAS hubby, I got scolded BIG TIME by him for my lack of speed, and organizational skills in packing the groceries. He almost didn't BECOME hubby due to his power freak attitude about packing the grocery bags in fact,,lol.
Since then, I have been taught to organize the items on the belt, in order of sack packing,,dry goods together, fruit together, frozen stuff together,, etc. Now, I hate having the cute 17 year olds in the states bag my groceries when I am visiting there, cos I know it's going to be a pain to unpack them, as they have not been bagged with the same skill and precision that my DH has hammered into me
I don't feel rushed anymore,, it's now a challenge to get the stuff bagged as fast as it gets scanned
The trick is to quickly have about 5 or 6 bags fluffed and ready for packing,, as things get thrown at you,, all you have to do is keep track of which bag is for frozen stuff,, for fruit, and if you carefully laid everything out on the conveyer belt in such an order,, it's pretty easy. Take avantage of the lulls in items coming at you to 'fluff' and ready more bags,, look out for moments when the items won't easily scan for this procedure,,,,,,,,,,, Dear God, I can't believe I am proud of my bag packing skills ,, I need to go bury my head in my Cosmo mag now,,,,LOL