One of the first questions we ask all of our divers when they checked in is, "How many weights do you need?". It's so important to keep track of your weighting to make each dive, wherever you go, as easy and relaxing as possible.
Good buoyancy is one of the most important components of being a good diver. If you're flopping all over the place, crawling on the coral and landing on top of other divers, you are not being a good diver or a good buddy.