In my case I hold the blade tight, but only by my index finger. I tend to wrap it in the handle firmly but my thumb and RPB fingers are loose in order to maximize wrist movement and adjust blade angle faster. The only time all of my fingers are tight is only during the ball contact. Then after the shot I return to default position and loosen all my fingers except the index finger.
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On other topics, I was planning to by a new FH rubber (inverted). Here's the case; I used to play LP/SP FH with counter hitting style. Unfortunately people in the club already found out my weakness, short-dead/chopped-balls. Every time they give me one of those the ball pops up when I return it and it's open for an attack. Since I just reached a short ball on the table, I don't have enough time to move back to receive the attack. It's annoying, so I decided to move to inverted because it can chop a chop and prevent my opponent to openly attack me.
So now I'm looking for an inverted rubber which is like a pip but without the deception. One that is low-throw, great for close-to-the-table, excellent counter machine, and capable of fishing far away from the table (don't judge me).
Here are some in my mind:
1. Xiom Sigma Pro II
2. Xiom Omega IV Pro
3. DHS Hurricane 8/ 2 NEO/ TG-2 Neo
4. Galaxy Moon Speed
As of the moment I'm using Mark V but it lacks the speed to kill and the throw angle is a bit high for me. I'm going to stick the new rubber to my new blade Galaxy 986 (5+2 Jpen).
Thanks guys!