This excerpt taken from the FUN DEF 14A filed Mar 31, 2009.
Our 2008 Omnibus Incentive Plan allows us to grant options, units, unit appreciation rights and other types of performance awards. However, for the past five years we have relied primarily on our phantom unit grants to provide long-term incentives to our executive officers. With the change in accounting treatment of options, we, like many companies, reexamined the cost and competitive need for options. We determined at that time that phantom unit awards could give key employees a proprietary and vested interest in our growth and performance and align key employees interests with that of our unitholders while providing a more cost effective means of compensation for us.