Welcome to the board. I have the same boat and I have the Four Winns cover. Fits good and has straps that attach around my trailer with the adjustable plastic clips that snap into each other. I can get it nice and tight and the fit is very good. I have not trailered the boat with it yet, but heading to the Florida Keys this summer and was planning on using the cover so I could store some stuff on the boat.
West Marine, Overton's, and other companies offer boat covers that might be cheaper than a Four Winns model.
And as the saying goes here, it didn't happen if you don't post pics! We want to see your boat!
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2010 Sea Hunt Triton 220 "Big Whiskey"2003 FW Freedom 180 Volvo Penta 4.3GL/SX-M "It'll Do Four Now" (Sold)
2012 Avalanche LTZ 4X4 