well i will be using a custom built prop mount that i will use a servo to adjuste the angle of the propup and down like this / \ just not that extreme only enough to get the prop in the water to go fast or surfase peircing to make a huge roost i know that i cant have both roost and speed at the same time hence the prop mount another thing i am wondering is will it damage the prop to sufase peirce and then go fully sumerged pending on what prop you guys recommend