'Afternoon. I have a 1999 Hewescraft Sea Runner 179 with a Mercury 175 Sportjet. The Sea Runner is a deeper-vee model and it seems to want to list at speed (over 23 mph or so) to one side or the other. If I try to run her straight up, it tosses back and forth and side to side like it is trying to tell me that it wants to lay over on it's side. So, I turn a bit, lay it over, and it runs smooth and straight, only listed over so much that the folks on the uphill side seem mighty nervous.
The Hewescraft hull has the "extend the hull out past the transom a bit and bend with a crescent wrench" type trim tabs. I've tried to go down with them (bent down, so more bow in water) and I'm not so sure it didn't make it worse. I can't bend one down and one up to try and stabilize the ride because the boat is absolutely ridiculous touchy about load, and it depends on how much I've had for breakfast that day which side it wants to lay on that day.
The sportjet setup itself also has a trim plate that is adjustable with jam nuts and twist screws.
I'm almost thinking that it is the deep vee that is messing me up, and that the combination of that and no skeg in the water sort of necesitates that I pick the bow up as high as it will go without porpoising to get some more stability (it is very unstable, too, I had a person move to the other side of the boat while underway and it made a 25 to 30 degree turn on me in about a half a second without my input. It was kind of scary.)
I'm wondering if anyone else has any experience with a jet/deep vee setup that can opine to give some ideas. I plan to test my "bow up" theory this weekend so I'll let you all know the result. Thanks
The Hewescraft hull has the "extend the hull out past the transom a bit and bend with a crescent wrench" type trim tabs. I've tried to go down with them (bent down, so more bow in water) and I'm not so sure it didn't make it worse. I can't bend one down and one up to try and stabilize the ride because the boat is absolutely ridiculous touchy about load, and it depends on how much I've had for breakfast that day which side it wants to lay on that day.
The sportjet setup itself also has a trim plate that is adjustable with jam nuts and twist screws.
I'm almost thinking that it is the deep vee that is messing me up, and that the combination of that and no skeg in the water sort of necesitates that I pick the bow up as high as it will go without porpoising to get some more stability (it is very unstable, too, I had a person move to the other side of the boat while underway and it made a 25 to 30 degree turn on me in about a half a second without my input. It was kind of scary.)
I'm wondering if anyone else has any experience with a jet/deep vee setup that can opine to give some ideas. I plan to test my "bow up" theory this weekend so I'll let you all know the result. Thanks