[Hiddos]

I don't entirely get what you mean. Hooks are used so that an include file can access a callback without interfering with the rest of the script. If you hook a callback one hundred times, it will execute every single hook once and move on to the next one. Your code will not loop, it will execute every hook once. If your concern having to call a lot of hooks/functions for just one callback; I don't expect that specifically to increase execution time. What you do inside your code is way more important.