It's lightweight, has a comfortable handle, and lets you know just how many berries you've picked. Always aim for at least a gallon. Gloves are an option, but finger dexterity is better without them, and berry-stained fingers and fingernails are a badge of honor. Bug spray, and lots of it, is always a good idea. Chiggers and dewberries go hand in hand.
Dewberries look like tight red raspberries before they ripen.
Pass those over and go for the dark, purple-black ones. You'll find that the plump ones are usually the sweetest. Tasting is mandatory. Just make sure you don't taste too many. The goal is to bring enough home to make a dewberry cobbler or two.