This worked on my wife's CB400T, and I don't see why it wouldn't work on a SOHC:
I use an regular vehicle (Car) jack. I place the bike on the center stand and a small block of wood under the engine and then crank up the jack slowly lift the front end up. With the SOHC, you just have to be picky about wood block placement to get around the pipes.
I've done the ratchet strap thing (you're right, it does work in a garage, too), but I wasn't as happy with the stability of it. The ultimate would be this and that working together