I've tried lead fishing weights in the handle of my HEAD Youtek Speed MP, but found that no matter how well I pack in the cotton, the weights always rattle a little when I mishit a shot.
I'd love to try silicone. However, I know that my handle is only hollow about an inch up from the butt (after I scraped out the foam that was there) with two channels going up. At that point, I run into a couple staples, and something firm.
Should I just pump silicone to that point? How much would that little silicone weigh?