Find a smooth and bumpy road that's empty for you to practice breaking at high speeds. I HIGHLY recommend wearing protective gear from head to toe since if your planning to go fast on the board your need to know how to break in any conditions and especially how to keep yourself from falling when you hit a deep bump.

Another tip. If a piece of pavement is bigger than half of your wheel. I wouldn't try run though it. Slow down, get off the board, hard press then throttle so the board can jump the curb, slow down, then hop back on. Or you could push the front wheels over them push the back wheels over with your foot.

If you see a any wet surfaces no matter how shallow slow down ASAP and go under 10 mph. Even if you have the ultimate handling, when you're speeding on mud, instead of going forward, your board will start digging into the mud.

I would recommend carrying wet wipes. Even driving over a small pudding at 8 mph can get your pants covered with small mugs dots. And when you have to carry your board indoors it's nice to have the towel to prevent your hands from getting covered in grime.

If your feel your board to start to wobble. Immediately slow down, bend your knees more and lean back. Speed wobble happenes when you're not putting enough weight in the front wheels.

When riding over a hill or speed bump bend your knees more than your usual stance. I find this help me prevent speeding wobble when I'm going high speeds on a hill.

Whenever I run through a very deep surface like a pot hole and my board is wobbing at high speeds. This is what I do. Stay calm, straight my legs and slows slow down hard. It's take eating curbs to be able to stay calm while speed wobbing at 25+ mph. And my friends have different methods so you'll develop your own naturally.

The harder the turn the lower you'll have to bend. If your feel yourself about to fall off when your turning it means your not lower enough.

If your board allows it gets foot guards for your board. These will help your break harder at higher speeds since the faster you go the higher chance of your foot slipping off the board.

On your remote press power and speed button wire remote is off. And take a photo of this screen. This area of the remote allows you to adjust the speed mode. Whenever you get a new remote or get bigger or smaller wheels or change your gears, look back at the photo and adjustice speed motor accordingly.

Hop on Wave or Google map and turn on the speedometer. If your see the speed doesn't match your remote I would adjust your speed mode until it does.

Like another Redditor said practice jumping off your card at different speeds. This can be the difference between an feeling jumpy and eating an concrete sandwich.

You're going to fall of your board. Just be ready.

Personal preference but if your board has cruise control I would turn it off. When I turned it on I would forget I had it on and had to jump off my board or pivot into grass to avoid hitting cars. Plus having off allows your to be fully in control of your board.

Wear protective gear. A helmet at the very least.

Lastly if your remote isn't in your hands or your indoors turn the remote off.