'75 MKII porpoising solution?

[idgara]

I have a 16', i believe it's a MKII, with the 318 v-drive. It porpoises at most speeds pretty terribly. I saw one once with trim tabs mounted but couldn't find the owner to ask about it. does anyone here have experience fixing this problem?

 

[SS165]

Re: '75 MKII porpoising solution?

Every single Mark 2 I have seen had trim tabs installed. I have seen them fixed and hydraulic but needless to say it is a known problem on these boatss. You probably have the v drive, correct? Contact Kendor Marine in Milwaukee, WI. They have all sorts of deals on boat parts and I have seen trim tabs there. I think they buy bouiders extra inventory and re-sell it. Good luck. Steve