I do not think there is a "draggier" aircraft than a SeaRey - with all the bits and pieces hanging off it - its like flying a Landrover with a full roofrack. The e-prop that I have now has certainly made a difference as I stated. I am not trying to sell the e-prop to anyone - just stating my experience with having flown it for about 7 months. The three main differences that I noticed is increased cruise speed at less revs - Some might say this is due to the pitch setting - but I am also getting a less takeoff distance and climb rate. Second it is very quite - to such an extent that people actually have commented about it - this could be because I have the four blade offset prop which has a different resonance in the pusher configuration. The notable lack of vibration is not due to any balancing that I did to it, but could also be a contributor to how quiet it is. I consider the biggest plus for a SeaRey, which are notorious for there aft CoG sensitivity would be the weight saving of almost 5 Kg back of the CoG. Like I say -not trying to sell it to anyone but if some one wanted to take it off me I would fight them off with a stick....