This are some of the photos of my first boat...
PL can any one help out that the hight of prop is correct of stil fix it down?
and stil i havent tested it in Water...

Some photos

Keep half of the prop in the water and half above the water. Also try and keep the prop axis close to  parallel to the water surface.

Here is a test run Video...
But at Low Battery!

You should take close up videos of the boat, its controls in action, and the electronics including radio that you used

looking forward to your video with full charge.
Well made.
Shreekant

@anwar sir: Thanks a lot,n the next video will be so!
@Shreekant sir:Thanks a lot for ur help and advice that shifting of weight worked! Ya will soon go for a test run with full charge!
and sadly my chargert is not working so finding for a new one in Bangalore!

what motor did you use???

@Aksh: I have used a brushless inrun motor!

ok..
where did you get the prop??
and what have you done to cool the esc and motor???
and nice boat

I baught my prop from Rcforall.....

and i made coolant from a brass tube!
still i haven't fixed but will work if u buy a brass tube and bend it over motor and ESC!
will post a picture of it soon....

Half the prop sticks out of the water.. Shouldn't the entire prop be in the water?

I think if the full prop is in water, the amp rating will increase due to increasing torque.Not sure.

Whats the point of having half the prop out of the water? If the current draw increases then wouldn't it be better to just change the size of the prop?

Surface drive actually improves speed and efficiency.  One blade in water would be faster than 2 blades in the water.hence the RPM would be higher.

Check out more information here.
http://www.well.com/~pk/SPAprofboat.html

@rooster
there is no use of surface piercing props unless the blades of the prop are thin.. but if prop blade has thick cross-section then it wil not pierce water surface.. also it only reduces the speed of the boat since only half of the prop is inside the water and thus you get only half the thrust as compared to the full prop in water.. so i suggest that the entire prop is immersed in water and the angle of the shaft must be as small as possible with the surface of the water...

Well done

Very nice

Why was it released with a lot of throttle 

nice work!!!
amazing speed as well

throttle is full on all the time    Looks good 

@Shreekant sir: Thanks a lot....
@Anwar sir: Ya simply i started it with full throttle, it is not giving so much of power after it is in water so can u help what would be the problem Thanks a lot sir..
@Aksh: Thanks a lot....
@Bmanoj: as I told after it is in water I have to try twice of thrice to increase and decrease the throttle to reach its full power...

Can I user more Amps ESC and battery to make it run faster ?

At present I used 18A ESC and 11.1v lipo battery 1800mAH...

The line of thought is something like this... the role of battery/ESC is to supply the power demanded by the motor.  And the demand by the motor is depending upon the prop used.  So you have to change the prop for a bigger dia and/or pitch, OR change the motor, to increase speed.  Now when you do either of those, your current requirements will change, and you have to remember that there are design limits on all of these components, so you cannot mix and match things arbitrarily.

can u give me ur motor specifications?