you should use your left hand on something. I don't think the move's that much harder just putting your toe on the jugs rather than using the scary heel-toe - worth considering if you're by yourself. I dare say it's a good deal easier when it's not summer. I reckon it's better to start matched on the jugs at the back then come out to the lip sloper, etc. Don't think there are any tricks on this one, it's just a hard lock to get the decent high bit of the left hand sidepull on the arete.