Ah, I too have a friend that loves gambling. What you can do is buy a laptop w/ internet connection, a few hundred feet worth of extension cords to the nearest outlet, and a waterproof bag or container. Put the laptop in the bag, but make sure it is open and powered on. Need to ensure the laptop is in a gambling free place, with no restrictions. You can pick any state you want. Find the IP Address of the laptop, and use a Remote Desktop connection app from your phone to wire into your carefully stashed laptop. Then you can place bets in from where ever you are. Just need to hope no one steals the laptop.
Or you can be a good, financially responsible citizen and not gamble.