I don't really hate any One Piece arcs, but there are some I'll skip-read/watch through. Mainly the Arabasta and Davy Back fight arcs. There are some stand out episodes in the Arabasta arc, but I get a little bored between leaving for Croc-sama's 'Palace of Eternal Crocmania' and actually getting there. Must be the fillers.
As for DB fight, I skip most of it - basically from when the horse gets shot until Foxy finally leaves. When I found out the anime had actually extended the damn thing I felt like crying! And then that filler… Maybe I just hate Foxy.
(I also wish I could finally vote, too. ;.; )
And God-yes! for Skypeia. It's by far my favourite arc, though EL and the war are high up there too.