Because there are better and safer hacks available now, I've disabled access to Speeder's unsafe hacks. You can reenable them using a new console command (-danger). Unsafe hacks include lines 2, 3, and any other lines or script commands related to those two lines. These lines have been marked with asterisks in the guide.
I decided not include movement speed as one of the unsafe hacks because it requires you to set a key, anyway, so it's impossible to accidentally activate it. Plus, I am not 100% sure it is detected at low speeds.
If you activate an unsafe hack without using -danger, Speeder will tell you the hack was blocked.
These changes require updating Speeder to version 212.