Newbie Jelquing Grip Is iT Right ?

Hello every one quick question about the grip method used; so I know about the OK grip but have been using the pincher grip as apparently it’s safer I have also been using what can only be described as an upside own V grip with my index and middle finger either side of my penis start at the base and moving up to the glans; what I wanted to know was is this a recognized method ? Used by people and are there any reasons why I should not use it. I have started to alternate between the inverted v and pincher grip and it seem effective but hay I’ll be guided by more experience members