1-For the branches to heal you need to put some honey in the wound and wrap it with gauze. 2- You need to low stress train, if you bend the branches over about an inch each day she will get use to it, and yes training your plant will almost always produce more yeild because you are getting more light to not just the top of the plant but the insides as well. go slow......
To the OP
Tape will work fine. Or even string. I would not put any honey on my plant. Bugs are likly to come. I would not put gauze on my plant. It will hold water and bring mold.
Just tape it like you did. Then use string about 2 inches above the break and tie the branch back to another branch for support.
If you plants alreay have buds your stems are going to be stiff like that.
How bushy are your plants? And how big? If they are not super bushy and budding I would not even worry about it.
I always tie my branches at the V where they will split for support. Then tie the top over. If you do not tie the V area of the branch it will just rip the branch at the V. Always tie the V together. Hope that make since.