[jotaen]

On macOS, I find “3 finger drag” very convenient to use, and for me it works a lot better than “press and hold”. (https://support.apple.com/en-us/102341) It even allows you to briefly lift your fingers to reposition them on the trackpad without stopping the drag action.

[chuckadams]

Found the well-hidden setting (you'd think "Trackpad" would be an obvious place for it), enabled it, and wasn't exactly jazzed: if I lift my fingers for more than half a second (say, to cmd-tab with the same hand), it releases. And you can't have both three-finger-drag and drag lock enabled, so drag lock it remains for me.