With the US Box, you can place the fin in different positions in the finbox. When you place the fin in the back you will have more balance, this is the ideal fin position for beginner paddlers. Place the fin in the middle for more balance, this is the best position for all-round use or yoga. When you place the fin more to the front, the board will be easier to turn. Installing and removing the fin, are incredibly easy and safe - just plug the fin into the fin slot and screw the fin in.