On: Digital Privacy at the U.S Border: A New How-To Guide from EFF

I'm not sure there's a third choice currently.

Don't travel to the US seems to be the only 3rd option.

Also don't fly through US airspace, don't do stopovers in Canada either (because the larger Canadian airports have US officers).

If you're talking about the preclearance facilities in the Canadian airports, they only inspect people who are departing on flights to the U.S.