J/30 Class Association Forums J/30 Forum The Boat, Sails and Equipment Folding Props

As a new J30 owner I was warned that the two blade Martec folding prop was not the greatest in reverse....
I was considering to replace it with a three blade folding prop www.kiwiprops.co.nz/
Has any one on the list replaced the martec with something that offered better thrust is reverse?
Would changing the prop disqualify the boat from OD racing?

Taras