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you wouldn't end up with a blurred image for each frame, but the sun would quickly move out of the field of view. With such short exposures your polar alignment doesn't have to be perfect. The closer the better, but if you have your mount level and its been polar aligned before you won't have to adjust your altitude, just make sure its close to level. And as you said use a compass, just allow for magnetic deviation (point about 11 deg east of magnetic south)
If you cant keep the sun in the fov for longer than 10 sec then your polar alignment is way out. With a bit of practice you will level your mount, point it roughly south and be done in a minute or two. Its not in the same league as doing deep sky imaging at night.
For a practice try using the moon. Similar sort of scenario
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