Catching largemouth bass off a bed while they are spawning can be challenging, but can also be a rewarding experience. Here are some tips to help you catch a bass off a bed:

1. Look for beds: Largemouth bass typically create beds in shallow water, usually around 4 to 6 feet deep, near cover such as logs, rocks, and weed beds. Look for clear water and look for circular depressions on the bottom.
2. Be stealthy: Largemouth bass are very sensitive to movement and noise, so it is important to be as stealthy as possible when approaching a bed. Use a low profile boat and move slowly, and avoid making any unnecessary noise.
3. Use the right gear: Use a light rod and reel with 4-8 lb test line, and use a small, subtle lure or bait. A soft plastic worm or a small jig and pig can work well.
4. Fish the edges of the bed: Bass will often be on the edges of the bed, rather than in the middle. Try casting your lure or bait around the edges of the bed and work it slowly and steadily.
5. Be patient: Bass can be very finicky when they are spawning, and may not bite right away. Be patient and keep trying different lures and techniques until you find something that works.

Keep in mind that during the spawning period, it’s important to handle the fish carefully, as they are more vulnerable to injury. So, it’s important to use a landing net and wet your hands before handling the fish. Also, make sure to release the fish back into the water as soon as possible after you catch them.