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#2
11-28-2016, 09:39 AM
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I think there is something in the OP symptomatic complaint that points to a possible issue that has been overlooked. The symptom of tab, tab... Fallover is a classic symptom of non- baffled fuel tanks. Is the main tank new? What about the 40 gal in the stern? Are the symptoms just as pronounced when the tanks are full? Just something to consider....
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[b]The Moose is Loose ! 
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#3
11-29-2016, 11:42 PM
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I think Gillie and Ken nailed it with the fuel sloshing/tank baffle comments! 120 gallons is a BIG tank that should have several baffles in it.
When a boat is already marginally stable in the roll axis, an un-baffled tank would tend to make it highly unstable because a little bit of roll shifts fuel weight in that direction, causing more weight shift which causes more roll, etc. A total of 160 gallons of fuel that's free to go where ever it wants to is almost a half a ton of mass that you have absolutely no control over! A 400 lb cooler in the cabin is a nit by comparison! Imagine having a roly poly 500 lb passenger free to roll around on the deck that immediately rolls to the low side as soon as you start a turn! I'm surprised you're even able to control the boat at all! Kinda like trying to balance an anvil on a broomstick! Did you notice any difference in handling between when the tanks were completely full and maybe after you burned off ~ 1/4 tank? The mass can't move around when tanks are completely full, so I could see you starting off the day with the boat handling fine and then gradually turning in to a nightmare!
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'72 SeaFari/150E-Tec/Hermco Bracket, owned since 1975. http://i188.photobucket.com/albums/z...Part2019-1.jpg
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#5
11-30-2016, 09:53 AM
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Quote:
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[b]The Moose is Loose !
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#7
11-30-2016, 04:52 PM
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Good looking boat
Is that ruler in inches? Is that the normal trim angle that you run at? Can you post a pic of how the prop direction lines up with the keel(at right angles to the hul)? So we can see if it is trimmed in or out. If its inches, and comparing to my I/O drive (a lousy comparison) it looks to be trimmed too far out, which would make the bow ride high.
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#8
11-30-2016, 05:41 PM
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I am not sure if it is in inches, the boat is kept at a friends house and I just grabed a t square he had. I will try to get better pictures this weekend starting with the motor all the way down. as far as the fuel tank the tag on the big tank says 2004. I think the smaller one is the same but I will have to check. the last time we took it out both tanks were full and it might of been a little better or I might just be getting used to it. my son is 25 years old and is a commercial diver and has been around boats all his life and he wont even run his own boat. lol
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#10
12-01-2016, 12:21 AM
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Quote:
15 gallons will have little to no slosh factor in a 6'x2.5' box centered under the deck. 60 or70 gallons might. This goes more toward your bow lift concerns, but I don't recall reading what model of prop you are running. Can you respond to that? perhaps youre trim angle is off, but maybe you have a bowlifting prop design too. Pics look like it has considerable rake. That will usually mean exagerated bow lift. On a higher mount it can also cause greater instability. this would be exacerbated by trimming too high. I think Bushwacker also makes avery good point about that tab shape. wide flat suckers would be preferable me thinks. Good luck with that sweet Seafari 
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