Some great ideas being shared here but it seems to me that if you are going to go to the trouble of building pumps, buying vacuums, etc., then you may as well just change what you are building the lures from. Cut the lures out of one of the many plastics on the market or just mold the lures from a foam or 2-part plastic and be done with it.
If you are really worried about water getting to the wood, do as many others are on the board and use your clear coat as the sealer.
Jed V.