...........now the Dolphin glaze works better... still takes a little longer to dry than Bondo, but overall it fills good. I did notice that you CANNOT put it on very thick and expect it to dry to sandable condition in 24 hrs.............

You must be using a different Dolphin glaze than I am. What I have will harden in 5 minutes or less, and be sandable in 10 minutes.You sure you're using enough hardner with it?
Randy