i had the same problem and figured it out the same way!... looking at Hogan on you tube.
there is a clip in there which shows Tiger V Hogan By gary Player - the penny really dropped for me when i saw that..
i used to Hook, long and low with a nasty tail at the end.
Now, whenever i have problems, i always mimmick Hogans hinge @ the top and bingo!, dead straight with very slight draw..
i think the hinge works because; - when you play a forehand in tennis, you hinge your wrist upwards before the pivot to generate power.
whewn you don't hinge, = less power and more variable result with the tennis forehand.
Golf is the same...
This really is the best kept secret in golf..