I'm currently running 29p P5X's on my 28 Daytona @ 5000-5100 rpm's. I have a free chance to try a set of 31p Hering 5 blades that came with my fathers new Donzi 38 ZR. Would they work on my Daytona and what rpm difference might I experience? Right now my hole shot is a little slippery with the p5x's and a high x dimension. How about hole shot with the Herings and overall performance differences? Any opinions would be appreciated...

It sounds like they might be too big, but there available and nothin beats trying them out, check with Throttle Up they know how to calculate slip and all that stuff.

The HEring props are 2 inches taller so your RPM should drop but Hering propellers are available in custom diameters so this will effect the outcome as well. But I envision that you will loose a fiar amount of RPM. Addtionally the P5-X props will induce some bow lift and the Hering props are stern lifting props.

Julie