I'm not a big time bed fisher (caught less than 2 dozen from beds, 6 over 10#) so take this for what it's worth.

The 1st thing would be to pick a bait that's almost all hook. I usually pick a plastic that will barely fit on a 4/0 Gammie bent shank worm hook. Something with short thin side appendages and not a long tail. If the fish grabs it I want it to get the hook in it's mouth, NOT a tail! A razor blade is your freind.

2nd use heavy enough line to get the job done. I usually Bubba shot beds with 20# line.

Leave the weight outside of the nest or they'll attack it too instead of just your bait. 20-30" from the bait to the weight allows me to shake the bait all over the bed without getting the weight into the nest. This also keeps me from crushing any of the eggs that might already be dropped.

Tight lines,
Wade