I find it hard to believe that you do not know the answer to these questions if this is "what you do for a living."

Stranger things have happened !!!!!!!! I sold a 33 daytona 138 mph on OSO guy liked the pics on OSO ,never came down to look or for a ride, wired me 140K + to my bank ,payed my son 1200.00 to meet him halfway with the boat in a rest area on the freeway ,and then calls a week later cant figure out how to drive the boat .. gave him my sons phone # he walked him thru it on the cell and the've been makin 128 & 138 mph passes for a year now .... :D

If you need truth. and start off the right way,,, www.performanceboatschool.com

i build offshore sport fishing boats not 100 mph boats. i understand the mechaics involved i was just asking for some tips on how to run it.wow it seemed easy to post on here a couple simple questions.some of you guys take your self pretty serious.thanks for the help from the few that did and i did not mean to waste the rest of your guys time.sorry i thought we did this for fun.look at the boats i biuld far from 100 mph. compositeyacht.biz thanks again for the help lew

Lew let me know how you get on.Speed,handling,driveability etc.

thanks i'm sure it will take me some time to be able to wind it out safely.i does not have external steering so that is top of my list.thanks everyone for the tipps. lew

Lew, Maybe you need to take this a little more seriously. These guys are not trying to be smart azzes. They know what they are talking about. They take the safety part of this fun sport very seriously and have the credentials to back up what they say.
Any performance boat the runs over 70-75 should have full hydralic steering! If you are have handling issues at 80, you are taxing your stock steering even more. Something is going to break and you are going to have a violent spinout. You need to fix this!!
Then if your boat still has handling problems you can look at those safely.

thanks payton i do respect everyones imput and the boat and i do not want to sound like a no it all cuz i have a lot to learn about high speed boating.thanks again everyone for the help and please keep it coming.i have the rest of the winter to work on the boat and its set up.also learning what to anticipate at high speeds.i know that time at the helm is important before going balls to the wall.i was hoping that knowing what i might experience at high speeds can better help me prepare.i'm also not beyond going to some driving schools i just thought some of you guys might want to tell me what you have experienced in simaliar boats at high speeds. thanks lew

Hi Lew
I'm new to cats also, mine is a 28 profile single with a 622ci N/A, spent last summer learning the difference between V's and cats, start slow, get to know the boat and how it feels as speed climes, currently running just under a 100 and it feels good, boat has more in it but I don't "yet". but most important is the steering, I had a cable break at 65 in a V and I'm surprised no one was killed, full Hydraulic is a must in that boat, considering the year and the stresses that have already been put on that system, UPGRADE NOW, it will save you problems later. good luck on your new ride and be safe.
Larry

thanks larry .if anyone has any info on used systems or even good prices on new.i have wing plates and a tie bar also do i need tabs the boat gets on plane great, is it safe to just trim with just the drives.tanks for all the help lew