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I have a 07 220 SANTE with the ZR6. Running around 3000 ballast and a 4 blade prop and wake shaper. Question I have is when I surf at a lake that is average of about 15 ft the boat seems to be slow to shape the wake. It almost seems as if the stern of the boat is riding lower in the water. Boat will still go around 15 but it will not shape the wake up. Wake is set at 1 which could make the issue worse. Slowing the boat down the going again seemed to fix the issue. Never ran hot, never lost power. Weirdest thing was just the fact that the rear of the boat seemed to drag almost. Only had one other adult and a small kid in boat. Surfed great other than that issue. We go to dale hollow and never have this issue.
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You may have a too much weight and going too fast for the 220. I ran stock ballast in the non-surf side and stock ballast plus 1,100 lbs bag on the surf side and a wake shaper . I generally have 6 or 7 people in the boat with me. I run at 10.3 MPH. Video below. Post Copy small.mov -
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I am trying to understand what you mean here exactly . Are you saying you’re going 15mph to surf? Should be more like 10.5 in that boat.
Depth of water also plays a huge factor in how the boat rides weighted. 12ft-15ft seems to be the depth marker. Anything under 12ft and your surf wake will not build. The boat will allso seem to sound a bit different and have a different running angle . Now for the nerdy physics explanation ......water displacement builds the wake and the fact water is displaced under the hull it pushes towards the bottom of the lake , the more weight the more water and force it pushed down with , the deeper the water the “less push back” the bottom of the lake gives,so the transom sits lower while surfing in deeper water . When you rode in shallower water that bottom pushes the force back up towards the boat reducing water you wactually displace which in turn changes your running angle slightly and really effects wake .
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Wake was all white water and acted like it needed to get a little more speed to shape then drop speed back down. Had a different driver in boat as well. What was weird to me is the boat seemed to be sucked down into the water more. Same weight we always surf with but the boat seems to get stuck almost. It’s like it forms a vacuum around the swim platform and instead of there being space between the water and the platform it’s almost as though the water is coming over the platform. To answer the question yes we always surf around 10-11 but we were trying to speed up to see if we could get the back of the boat”unstuck”Comment
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