The Single Fin Showdown held on Stuart Beach helps raise money for the United Way of Martin County

STUART, Fla. -- One of the largest single-day amateur surf contests is being held this weekend on Stuart Beach and it helps raise money for the United Way of Martin County .

It's called the Single Fin Showdown.  Ohana Surf Shop helps put it all together.

What makes this competition so unique is the fact that surfers are paired up with vintage, single-fin boards at random before heading into the water.

Now in its 5th year, the Showdown has raised more than $20,000 for the United Way in its first four years.

Watch Emerson Lotzia's report by clicking on the video attached to this story.