I posted several weeks back about installing one of these in my small 14 ft. aluminum boat w/25 hp. Merc. Well I did it this weekend and noticed some improvement in the amount of time it takes to plane out and it will stay on plane at much lower RMPs. But most of all I noticed that the boat has stopped pourposing with out having to lower the the motor in trim holes on the mount. Just thought I'd let ya'll know how it turned out.