Question: Placing boards onto your platform for the floor.
Option 0: Screw in screws at each board end with at least 4" deck screws. Once your deck boards have been cut to accommodate the trunks of your tree, it's time to screw them into place. Use a ladder to hoist yourself up onto the platform and start screwing down with a drill. Leave a slight 1/4" or 1/2" distance between each floorboard.
Option 1: Screw in two screws at each board end with at least 4" deck screws. Once your deck boards have been cut to accommodate the trunks of your tree, it's time to screw them into place. Use a ladder to hoist yourself up onto the platform and start screwing down with a drill. Leave a slight 1/4" or 1/2" distance between each floorboard.
Answer: 1