Gee Fred,
Your old blue boat looked like it had good vibrations...from a merc.
Obviously if this other "new" boat has a bad vibration it must be the new boat
I remember someone posting that life's to short to have and ugly boat...head check, man
Really, I think the prop dings could have an effect but ggreebys point regarding 2-stroke vibes is familiar. they don't want to put around - they want to run... maybe Bigshrimpin or Fr.Frank will shed more light on that...