Please put flags on your boards. Seeing is not a bad thing. I feel everyone should have flags on the boards. I use the flags you see to mark gas, water, electric lines. (after 10 days then should not be depended on according to the rules) it is illegal to move/remove them before that. I drill a hole on top of the board & stick in the flag. My buddy puts his boards out 150' on either side of his boat, now 300' wide & the boards are only 3" out of the water with no flags ,then ******* when someone comes toward him & doesn't see the boards! Drill a hole ,stick in a flag. Thanks, Jmo