Re: Fastest way to get on plain
Theoretically speaking, every boat is different and even the same boat running with very different blade geometry props will react differently to the trim angle of the prop at takeoff, and this doesn't even take into account how much weight is in the boat and where the loads are placed.
But on most boats, in most conditions it is preferable to have the motor trimmed in for the most efficient rise to plane.
Let's take Repo's boat for instance, he is running a very high rake prop for bow lift on his boat and possibly he is stern heavy, so when he is trying to get up to planing speed the bow rises very high because of the high rake in the prop, in his case it is normally better to tuck the prop up under the boat to keep the bow down when he is trying to get on plane. Doing this would decrease the angle of the bow at takeoff and thus make the transition to planing quicker, but if he has enough blade surface area in his prop and enough horsepower he will only be at that attitude for a short time. But with the wrong prop or not enough horsepower he could take a longgg time to get on plane. A prop that had more stern lift built into it would stop the bow from rising so high and would normally get him on plane quicker, but that prop may not lift the bow high enough when he is trying to get maximum speed. So it is normally tradeoffs as always.
In my opinion there is no absolute answer to the trim angle required for the best transition to plane for all boats, as everyone is different, and the horepower and the loads and props can be different for even one boat, so that under certain conditions you would want to trim the boat at a very different angle than you would normally use.
But I will say again under most circumstances and most boats it is preferable to have the motor trimmed in and not out.
H