I was recently told that these work well on Fountains. Anyone had any experience with Hering or other 5 blades.

Thanks.

I have a 37 A.T. AVH with KE 675 and Imco Ext.S/C. Out of the whole the boat planes up in less than 8 seconds where my 32 - 4 blades take longer. Also for handling the boat feels like a rail car, turns and handles much better, the only negative I see, but not done testing, the top end suffered about 1 mph in about the same conditions, in all, worth the extra coin.