I recently purchased s 5'6 Sweet Potato and have controller fins on it. I have had it out about 5 times. Just recently in a smaller size waves 2-3 and I can't seem to find the gas pedal on this board. I have surfed it on a 4-5 ft day and it flew but anything smaller and I can't seem to get the board moving down the line. Especially in the mush waves I was on yesterday..... I kept getting stuck after take off not having enough speed to stay ahead of the white water. Any advice or idea would greatly be appreciated!