I have a friend that uses a credit card to tuck the edge over. It's kind of hard to explain how he does it, but I'll try.

Prep the joint like normal
Start to roll
When you get the the tuck over part of your roll grab a credit card or ID and put the top edge long way against the paper that needs tucked.
Now you can tuck the full length of the paper at once.
Once the paper is tucked remove the card and finish your roll

I hope this made sense...it's easier to watch and I don't have a camera of any type or else I would show you.