Heres the Glastron nothing too fancy.................................. ......................for now

I'd probbably try shortening the ride plate 4" or so maybe in 1 inch increments.  But at first glance it looks like the exit nozzel is way up in relation to the keel.  I'd level the boat out and check the pump angle, the top of the intake/base of the suction should at 4 degrees or so.  It looks like it may less that could be causing you handling issue.

I set it originally at approx. 2-3* up, then fine tuned it with the diverter in mid range (rooster around 3 feet above water level) at WOT, til I found the spot where it didnt porpoise, and didn't feel any drag. Just a degree or so really DID make a difference and now that it is set its around 1* "UP" It feels right no drag, no porpoise, but it is still scary to turn sharp.
Here are a couple more that might help, I can't believe I dont have any pics showing it straight on with the angle showing, I know I have one I just cant find it

Hey Doz ,sorry I missed you the other day ! Catch you next Tom

nice "pumpage"

  NICE, you got a bitchin boat to go along with your bitchin stroker engine 

Blue, Nice engineeering and fab work ,looks like somebody new thier stuff !! SCORE !

I set it originally at approx. 2-3* up, then fine tuned it with the diverter in mid range (rooster around 3 feet above water level) at WOT, til I found the spot where it didnt porpoise, and didn't feel any drag. Just a degree or so really DID make a difference and now that it is set its around 1* "UP" It feels right no drag, no porpoise, but it is still scary to turn sharp.
Here are a couple more that might help, I can't believe I dont have any pics showing it straight on with the angle showing, I know I have one I just cant find it

that rideplate looks a bit too long. have you measured it yet?

Josh and I were talking about the length, the boat turns like chit and I have spun it out twice. I am going to shorten it up an inch at a time, up to 4 or 5 inches

Josh and I were talking about the length, the boat turns like chit and I have spun it out twice. I am going to shorten it up an inch at a time, up to 4 or 5 inches

Greg Shoemaker posted this on the perfromance boat board:
    "Rideplates, rounded, concave, radiused. ribbed, dimppled and slotted proved to do nothing significant in a drag race set up. The rule of thumb when we started racing was somewhere around 18 inches. Well being young and fearless Jeff ,Norm, and myself decided to test ridplate length with one of the Dash for Cash boats at one of our famous test scessions at the now Blue Watwer Casino formly BlueWater home of the NJBA. On an off weekend we took our test to the water and this is what we came up with .Starting with a 18'' we ran the boat everything went well our std setup Test 2 20'' ran the boat and it was visibly freeer on the water all settings remainded the same.Test 3 22'' rideplate boat got way to loose. Test stopped on length. Now we went short rideplates 16'' was tried and the difference was the tail was stuck so we got the bright idea to try no ridplate at all and this is where the fun begins. The boat accelerates good, gets to top speed OK but the shut down was pretty bad, boat came down extremely hard .That was basically the end of the test secession on rideplates. We felt that we could make the boat a little better in different water conditions with the aid of a different length rideplate. Not a good idea to run a boat without a rideplate. So all you guys makes sure you have the proper length, bolts to hold your underwater hardware on because you'd never want a rideplate to fall off!!!!"

at 1* up.... i think thats your problem right there...you want to be around 3* .....lil ricks boat was a degree or two off when he bought it and the previous owner had severe bow steering issues...so he (the previous owner) cut off the turn fin  ...rick took it over to jack over at MPD put a straight edge on it and knew right away why it was doing what it was doing. ....basically the previous owner hacked that turn fin off for no reason.

also, does the bottom have any hook in it? boats with hook that have droops tend to have porpising issues. putting your ride plate at 1* up will fix the porpising, but will lead to other issues (knifing and bow steering).

When I was adjusting the ride plate after my initial setup, It was obvious that even a half turn up or down makes a noticeable difference. And living so close to the lake and having a pass, day after day,...well evening after evening . I was able to get it dialed in to the best spot it was going to get, I actually learned quite a bit just by reading these posts, making the adjustments and being able to test it right then and there. I am certain found the best angle performance wise, I will go and check the final angle and let you know what I ended up with.
So now I will need to get the steering dialed in, and it sounds like we are headed in the right direction.
After hearing and reading these posts, I am thinking I'll notice a pretty big difference with the ride plate shortened, one other issue is one of my fins has a nice nick out of it, I hit a rock on the Avi trip (dam things ..right in the middle of the river) , there are no noticeable changes now but from what I have read in the past, about all I can do is even them out. But I will bring that up when I am under it and can take some pics.
Thanks for all the input........great imformation!!
John

OK Here it is as I purchased it , 197? Sanger Super  Jet

Engine is   a  BBC  WITH AL HEADS   MAG AND TUNNEL RAM, I did not   get that motor with the deal .
The boat is on a trailer in the pic  .