It's next to impossible to watch F1 on TSN. Side by side commercials DURING THE RACE, commercials that run way too long and cut into the event, strange freezing/skipping, etc. Try and watch qualifying... "I thought Q2 was 15 minutes, why when we came back from the commercial there is only 11 minutes left?" what a joke. And the side by side commercials, all you have is the audio from the commercial "Ok, we're just about to interview the new owners of F1, this is gonna be great..." boom, side by side commercial, so you can't hear anything. Right as the commercial ends "omg that was some amazing info from the new owners, can't wait to see it go in that direction..." you don't want to read the e-mail I sent to TSN after that, would make a sailor blush.
If F1 is doing direct subscription in the USA you could change the billing address on your credit card to a fake address in the USA and use a VPN to change your IP to a USA IP and you could probably sign up for it and it would work real nice I'm sure.