USS Constitution-minifig placement

USS Constitution-minifig placement

I need some advice on how to stick minifigs to the deck of the Constitution. I can’t use jumper plates as it messes up the planking and doesn’t look great. I want to be able to place the minifigs and for them to be able to withstand someone banging into the table. Blutac is out as it can be seen in the minifigs leg holes - whatever is used has to be temporary as I want to be able to take them off after display... any thoughts please?