Developers are asking the Kill Devil Hills planning board to change the formula for determining density on the ocean front. The ordinance now allows for six units per acre for a multi-family unit or condo and 24 rooms per acre for hotels. Cahoon and Kasten architects submitted a proposal to switch to a new method known as "Floor Area Ratio," which would give developers more flexibility in using the land. The planning board rejected the idea, saying it could open the door for builders to pack too many people in new condos or hotels. Cahoon and Kasten Architects plan to go to the Kill Devil Hills town council with their proposal March 13.