Originally Posted by
Alpha Golf
I convert mine to LH and always book the 748. With 80 or 92 J seats, there's always been one for me.

Hope this isn't too off topic: do you book an economy seat and then get a paper upgrade for that flight? Do you check out the seat map first to see how full it is?
I've read that at some point you will be able to all in to apply a GPU, but not yet?