Best method for girth increases

Is there a generally accepted ‘best’ method for increases in girth?

I’ve been doing the newbie routine since mid December now, just doing a manual stretch for five minutes then Jelq in the shower for ten minutes using a powerjelq. Length has been a good increase so far from 5.75” to 6.5” and I’m hoping these gains will continue but girth wise and I’ve seen little if any change and I don’t really want to end up with a long skinny dick, should I start mixing a clamping session into the mix or is there another method I should look at first?

How about trying a regular jelq?

Maybe I worded it badly, when I say powerjelq I mean using the device thing with the foam rollers. Assuming as such that this would give me better gains over just using my hands/fingers for a normal jelq.

I knew you were talking about the power jelq Spod. Why not try good old fashioned jelqing and see what that gives you, before moving on to advanced exercises?