Easy - left-most portion of the right turn lane. With all the cars turning right in that right lane, and that right lane looking pretty wide, the left-most 6-8 feet of that right lane is always going to be clear (except when a semi is making a right turn). So just get up there in that space since no one else is actually going where you're going. You also wouldn't be blocking anyone else. No big deal.

You could even filter through traffic to the front on a red light without blocking or impeding anyone since again, no one else is going to the same place you're going.