Mulligans
Aggro Mulligans
Pretty self-explanatory, low-cost minions are preferable. Shock hopper is the best card to mulligan for as it requires no build-up and provides fuel. Flowrider requires minor setup. Trusty Companion is a good two turn for shock hopper because, if it survives, you may draw into Rocket Hopper or the next Shock Hopper.
I’ve had some success with Rocket Hopper and Overdraft for an aggro deck. Please let me know how you think we can improve it!