My 06 is easy with the factory releases. I am standing at the drivers opening, I pull the latch, I lift up the clamshell, stick my finger in and release the latch, I then pull up the clamshell until it hits the passenger release, walk over to the passenger side, stick my finger in and push the second release, and open it up. There is no stretching, I am 5'10". Try doing that in the procedure I described and it works.
Two factors that might make that not work, one would be weak supports that hold up the clamshell, my car had new supports installed, by Rich during a PPI he did for me, so my clamshell pops up on its own. The other factor is trying to open it up on the passenger side first, you must start at the drivers side.