I always wait for a gap, even if just a small one. A lot of motorists fear cyclists. Even if there's no way I'd be making the turn into their path, many are afraid I might. I think it's harder for them to read whether we're going straight or turning sometimes.

So I try to time it so that they won't be afraid. I would do the same whether there's a bike lane, WOL or whatever (in my town the bike lanes are gone by the time you reach the intersection.)