SDS prop for F70LA to match 13 1/2 x 15 K series

[lrg-35553]

I have a 2014 F70LA with a 13 1/2 x 15 K series prop. The rpm is ideal at 6100 at WOT on a 17 1/2 ft alum boat. I do not like the vibration at 700-800 rpm *****ing speed. I read that the SDS type prop would improve that problem. Actual info on availability of the various types of SDS props is hard to find. What is available in that size in AL and what would be a reasonable upgrade to SS.

[boscoe99]

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2015_Yamaha_MRP