A big advantage of using lots of chain is it allows you to use less rode to anchor. Using a good length of chain will allow you to pin at 2 or 3:1 when fishing shallow for springers. Much easier when joining a hog line if you are only 3 or 4 boat lengths out than if you are 10 or 12, especially in March and April when so many boats are lined up.

The longer the chain, the bigger the wake or swell you can take without having your bow lift the anchor. Long chain at 3:1 will keep you pinned when the 45' cruiser or the tug without a barge plows by. With little or no chain, you'd have to let out more rode to survive the bounce from some of those wavemakers.