Let me try to help your wallet a bit.
I often leave this lens at home, carry the CF version instead, just because of the weight of the thing.
It takes very big filters.
It originally came with (or rather: you had to buy separately) a simple (as in: one piece) screw in hood with 86 mm thread. 86 mm filters would fit between the lens and the hood.
Later, they changed the hood to a two-piece affair. It still has a 86 mm thread on the rear for mounting it on the lens. The front part of the hood now unscrews, and threadless 93 mm filters are placed in between the two parts with the front part acting as a retaining ring, or threaded 93 mm filters screw directly into the rear part of the hood.
So with either hood, you need big and expensive filters.
A better alternative, one would think, would be to use a bellows hood and gel or resin filters in there. That will work with the ProShade 6093, if you can find the 93 mm adapter. 100 mm resin filters are affordable, and if you get those made by Lee, good.
However (there's always a catch...), the F lens' front end will rotate during focussing. And so will the hood. You can adjust it after focussing, of course. But a lot of fun it is not.
Another thing is that you still need to get an expensive glass polarisation filter, if you want one. And if you do, you will find that the bellows hood (or other hood) more often than not will not fit anymore. Unless, of course, you buy the even more expensive late style Hasselblad 93 mm polarizer.
So if you count a polarizer among your most used filters, break the news to your wallet carefully. And better forget about the ProShade.
Which leaves you with a very large bit of glass right on the front of the lens, with nothing at all shading it.