i have tried pushing my ogre too far, i tied it down when it was still a sprout, then under a net, then tied out. it hasnt worked.
i had best results waiting about 2.5-3.5 weeks. i tend to be bending leafs out of the way as soon as possible to expose the nodes and get them started, when i have 3 or 4 sets of nodes i bend the main stem over and again continue to bend leaves out of the way by hand twice a day for a couple of days to expose the nodes. within 2 days the nodes are usually above the leaves and the main stem needs tying back down at the tip. then just leave it.
i did do it too early with my fantasmo i have in at the moment, i only got 4 top nodes in total, it got too leggy too fast, i will deffo wait until i have 6 nodes to work with next time. I guess a lot of it is strain dependent really.
hope this helps.