One of the best ways to keep bait alive in a kayak is to use a live well. A live well is a container that is designed to keep fish alive and healthy for extended periods of time. Live wells are typically filled with water and have aerators or pumps that circulate the water and oxygenate it. This helps to keep the baitfish healthy and lively. Another way to keep bait alive in a kayak is to use a cooler with ice packs. The ice will help to keep the bait cool and fresh for longer periods of time.