Using hurricane 3 on a very fast carbon blade

mmmm i used to think like that. I used to use Jun Mizutani with H3 and the results were poorer than with a clipper and TB ALC with H3. The reason is that a fast blade with low dwell makes it difficult to brush the ball and impart spin. As a result, it was difficult to produce loop kills with tons of top spin to finish points as the ball will leave the blade before you are able to brush the ball well. Low top spin means the ball wont have much kick on the bounce and not being able to brush well makes looping backspin difficult.

A fast blade can compensate for the loss in speed in H3 but there must be a fine balance between being able to brush the ball and having the ball shot off the blade before you can brush it. This will come down to personal ability and I have no experience if the ovtcharov carbospeed is too fast. At least personally for me, the only blade i cant brush well in time with the H3 is the Jun Mizutani. TB ALC, Viscaria and my Xiom Zetro Quad with Kiso Hinoki outer ply are fine. So you have to bit the bullet and get that combo or borrow a friends blade to see if the blade is too fast.

Why not try a hybrid rubber like Tibhar K1, Joola Golden Tango or Stiga Genesis II instead?

H3 is not a slow rubber, on the contrary