How do I go faster?

I don't have many overclocks so I know using the "boosts toy in the opposite direction of firing" type overclock for the boomstick is best, but is there any way to make me go faster without it?

I don't have many overclocks so I know using the "boosts toy in the opposite direction of firing" type overclock for the boomstick is best, but is there any way to make me go faster without it?