Hockey helmets huh?
I could get an abundance of padding from those seeing as how my cousins are all-star hockey players! So, is a chin strap absolutely necessary to reduce bobble head?
Id say use one of my foam padding kits. but of course id say that.
If you pad the rear with a thin pad. and then pad the forehead with the appropriate thick foam padding you can get the fit just right. And it will force the visor off your nose.
Thats how I have always done my padding. With my foam kits the brown works in the back, and the third brown that comes with it gets used in the front. A foam piece in the top center adjusts the height.
You can do this though with ANY foam. Theres no need to order a foam kit unless you want it to look like electronics and padding from a real starwars helmet.