Is it compatable?
I've not had any issues with rustoleum. Never had any luck with the fast dry paint just the normal stuff from Walmart has been fine.
I always use min-wax poly over Rustoleum with no issues. I use both Fletch tape and or NPV adhesive.
The answer is "probably". In general poly will go over most finishes, but with all finishes it's best to try some on a sample piece.
I just used it over rustoleum without issues on my first set of woodies.
Never had a Problem with Poly over Anything Acrylic Paint-Wise. Testors, Rustoleum, or Walrus Worlds Best!! :thumbsup:
I use wipe on poly over paint or stain no problem.
Here are some I just did. Krylon spray paint
(http://i1166.photobucket.com/albums/q618/brianlocal3/arrows/964F8660-98E1-464D-A303-6C0AB4F7AEC3_zpse05u9gtt.jpg) (http://s1166.photobucket.com/user/brianlocal3/media/arrows/964F8660-98E1-464D-A303-6C0AB4F7AEC3_zpse05u9gtt.jpg.html)
Nice job Brian!