All single ply jpens will seem crazy fast and powerful with lots of bounce to any cpen player. It takes a while to adjust to the stiffness of the Hinoki. Your strategy might need to change a little, distance from the table, etc. Also, the technique is a little different, Jpen users tend to drive more, and cpens tend to brush more. Too much brushing with a Jpen doesn't work in my experience except for opening loops.

The grip is usually a little different (depends on the player) but cpens tend to have curled fingers on the back and Jpens tend to have straighter fingers on the back. That straight fingers add stability which gives you more direct contact, especially since the blades tend to be heavier. If you are curling, it's possible you are further reducing the bite the rubber has on the ball and thus flattening toward the net sometimes...other times you might be hitting the ball just right and getting a lot of rubber on it, thus the ball sails long. In my low-level penhold experience (I only play for fun now) curled fingers on a single ply hinoki jpen is very erratic.

But I'll let the more experienced penholders validate whether I am full of s*** on this or not because I am a essentially a noob again (played years ago, switched to shakehand, play for fun now)

I will tell you this, every CPEN player I know that changed to Jpen (or tried Jpen) struggled with control initially. It's very different.

I saw VERY FEW J-Penners in Korea use T05 on their J-Pens, usually an RSM or KTS one-ply Hinoke... They nearly all used T64.

All single ply jpens will seem crazy fast and powerful with lots of bounce to any cpen player. It takes a while to adjust to the stiffness of the Hinoki. Your strategy might need to change a little, distance from the table, etc. Also, the technique is a little different, Jpen users tend to drive more, and cpens tend to brush more. Too much brushing with a Jpen doesn't work in my experience except for opening loops.

The grip is usually a little different (depends on the player) but cpens tend to have curled fingers on the back and Jpens tend to have straighter fingers on the back. That straight fingers add stability which gives you more direct contact, especially since the blades tend to be heavier. If you are curling, it's possible you are further reducing the bite the rubber has on the ball and thus flattening toward the net sometimes...other times you might be hitting the ball just right and getting a lot of rubber on it, thus the ball sails long. In my low-level penhold experience (I only play for fun now) curled fingers on a single ply hinoki jpen is very erratic.

But I'll let the more experienced penholders validate whether I am full of s*** on this or not because I am a essentially a noob again (played years ago, switched to shakehand, play for fun now)

I will tell you this, every CPEN player I know that changed to Jpen (or tried Jpen) struggled with control initially. It's very different.

Yep, same in japan. But there I saw more of them using slower softer tensors or classic rubbers like Mark V.

I think the most popular was Nittaku fast arc, the one that is most forgiving and has the lowest throw...I can never remember the difference in those rubbers. After that I saw a lot of Xiom Omega IV Elite (slowish and spinny) and Tibhar MX-P. And surprisingly a lot of the Yinhe tension rubbers and the most popular was Saturn PRO. I think the Saturn is popular because the WRM guys are pumping this rubber up, and the Jpenner on there named "Xia" uses it.