OK, getting back to the OP's question, a big rooster tail might - and might not - be a bad thing. You can generally throw a pretty big rooster just by over trimming a boat. That would be very inefficient - and tough on the u-joints too.

You can also throw a big rooster tail in a boat where the prop shaft is closer to the surface of the water. (That's that "x-dimension" thing they're talking about.) Generally speaking, raising the propshaft height relative to the planing bottom reduces drag on the gearcase and thus increases speed. You also get a free rooster tail. In my experience though, unless your drive is mounted really low or you're going over about 75 MPH, raising the drive up doesn't do much.

How do I know all this? I run an outboard and have for years. I also run mine with a jack plate - which allows me to alter my x-dimension at will. I currently run my Diamond Marine modified Mercury 200 well up the jack plate / transom. My hole shot stinks, but top end is quite nice and a huge rooster - even at zero trim - comes with it for free.

Hope that helps.

My slip#'s are 14% give or take w/ KAAMA drives. (Rick wont send me a set of his for free either. :)

Just a thoughtg before you realize you DONT want a huge roost after you find out the cost of one. Put the $$$$ into your motor and set up and wax the S#&T out of the 30 footer and he will be wanting what you have.
Do you want to finish first, or look like you could have???:drink:

I told you, here is is all you will need :D

4% when there dialed in BIG Daddy :drink:

I've got a 35 at the shop right now with a pair of 1050's and shorty XR's with six blades. It throws a roost and drives at the same time.. :lolhit: We'll see how it does with SCX's.

Here's a 36 supercat with #6's

http://www.youtube.com/watch?v=ao3v9MXwEHo

Now I need a SHAM WOW to wipe the DRooooL from my laptop!!!
They cost more than I have into my boat, ,,,,,,,,,, Wish I had a better boat. HAHAHAHAHA It is a Skate Nation!:drink:

Look a little closer at the photo. Those are for a "Model Boat" :D

Pretty tough to tell with just a glance, nice one! I would love to have a pair of arn's for sure. Think I will wait till I get a new boat. I have mine for sale now think I need somthing a bit bigger for Lake Superior than a 30 footer. Might go with a vee but it will have to be nice, really nice. I can only imagine that the new technology offerd by you is the way to go, as the old Kaama I run seems to do quite well and is old and heavy. Had my first scare last weekend Lost a fuel pump in a hard turn @wot. a little like an 8000 lb pinball! Made it out fine and repaired it to go on sunday agian. Oh yea it was a huge rooster when the other sponson planted.

I raised my drive over 2", gained 10 MPH

Plate was below the boat, and plowing through the water, now plate does not touch at speed.

HUGE improvement, no downside, great rooster tail as well!