RC Boat - Remix

Loved the design of the Bullet Outboard Boat by joeytvr. But I wanted to install an internal engine. So I changed the back of the boat and cleared it.
In addition, I have created a housing cover and a motor mount. I printed the boat a bit smaller with 65%.
I've done a test drive so far. I am not satisfied yet. At slower speed everything is ok. But at more speed, the screw only draws air and does not generate propulsion. I'm still testing with different propellers. Think the screw should be a little deeper in the water.