Started end of January 2016 and finished it in 3 weeks ... at the time I think it was episode 727 or something...
I saw almost all filler till a point, but then i saw online FILLER EPISODES EXISTED, I genuinely had no clue, so I skipped filler from Thriller Bark and after...
Then a month ago out of boredom I started watching the dubbed episodes and cause I wanted to hear all of crews' voices in English I randomly selected the episode where they burned Going-Merry...
Needless to say I was pleasantly surprised :D
And then skipped to the part where they first encounter Brook, again I was surprised but this time cause the voice acting was so close to original I LOVED BROOK'S english voice :D
After that I saw all dubbed episodes till 504 and went back to subbed xD
So one thing led to another and I'm currently watching the subbed again after end of dubbed 504 ... I'm at 652 now :D
Also of course I'm reading the manga, now that I'm caught up :P