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Got a new SeaArk 2072 vfx cc with DF150. It is currently set up with a 3x16x21.5 ss suzuki prop from the dealer. It gets up to 5800rpms and around 47mph. I'd like to reach 6k rpms and 50mph. Which size prop would you recommend? How about a 3x14.75x23p? The suzuki site only has one test of a SeaArk with df150 and it's an 09 SeaArk V Baymaster. It is 20' and looks very similar to the 2072 vfx only it weighs 75 lbs more. They ran a 3x14.25x23p and got 50mph at 6k rpms. What do you suggest?