Increase grip level

[Genaside II]

We all already know this but might as well post.

Find a ledge to hang off of.

Then press L1 and R1 at the same time to do a chin-up.

Do this 100 times and you will gain a level in grip, meaning you can hold onto a ledge for a longer time.

Do this up to 300 times (confirm?) and you can get to a max of Grip Lvl. 3.

[Econs]

That, or otherwise hang off of a railing, then drop-catch down to one right below it. This counts as 10 pull ups. Do that 10 times to raise your grip.