"Cooler water ski adjustment would be .005 increase in DFT or you could try A wing angle increase instead (DFT is better though)." Yeah... I don't know. Some think the exact opposite fin adjustment is more appropriate - like Chris Rossi, for example, who writes: "... As the water cools down, we start to lose that space before the buoyand see a drastic reduction in buoy count. Lets take a look at changeswe can make to help keep some of those buoys we tend to lose. I havelisted the suggested changes in the order that I change them. Move the Fin Back: When distance from tail (DFT) is decreased, the tail of the ski slides out less in the pre turn. This helps to keep the ski out in front of the skier more. When the water cools down, the main thing I feel is that my ski wants to suck behind me much quicker after the edge change. This causes me to get too much of the ski in the water too early, taking away width and speed before the buoy. If I am too far forward coming into the ball, then I will have to rock back at the finish of the turn or I will blow the fin out and fall. By moving the fin back, more ski will be out in front of you in the pre turn, helping to set up the best turn possible. My general rule of thumb is to decrease DFT by 0. 003 inches for every 10 degrees of water temperature loss..."Clearly opinions vary. Who to believe... who to believe... TW http://www.proskicoach.com/gear/cold_water_ski_setup/