The soft spots are an interesting theme for debate and I hope we can go into more detail tomorrow.
Anonda, I believe confusion work may have results on some targets, preventing them from thinking straight. I use those ingredients in my confusion formulas. Mustard is great also for inflammatory confusion, seeking to separate groups of enemies. However, from my experience I can tell that it can be a slow moving type of spell, or not suitable for all resistant targets.
Meanwhile, there´s something I wrote this morning (couldn´t post it right away because had limited access to the net) else I´d like to share: Another technique I use every now and then is brazilian, and seeks to bring down the target´s "guardian angel" - or whatever the douchebag´s excuse is

. (I don´t know if I´m allowed to post this here, if not plase warn me, guys...).
You need 6 white taper candles. Place 3 of them forming a triangle (stick them on the ground, or on a tray placed over your altar) and the fourth candle you must brake it, and stick it (pointing down, to the left/candle3)on the right side of the base of the triangle:
candle 1
candle 2 candle 3 candle 4 (broken)
Light them.
Then, write your name on a strip of paper, and tie it to another candle with sewing thread. Put that candle on a virgin, brand new (never used) glass filled with half water, half honey. Say:
"I do this to strenghten my holy guardian angel" or the like.
Finally, take the last candle, write your enemy´s name on another stripe of paper and tie it close to the wick. Turn it upside down and carve a new wick on the bottom. Focus on your intent. Begin by lighting the normal (up) wick. Then light the bottom wick (this can be tricky to do, but you´ll manage), and keeping the candle reversed, snuff the upper wick, and the name, inserting the candle in the glass. Say:
"I do this to break the strenght of (target´s) guardian angel". Let the candles burn down. The weird thing is the flames should extinguish when they reach water level, but by the strenght of black magick, if the work is well done, they´ll keep on burning, the candle consuming UP the glass. In the end you´ll have a mush of wax above the remaining water. Dispatch everything on a crossroads.
Then you may proceed with your spellwork. This preliminar spell also works for stubborn LOVE targets, or bend over spells. It´s not as powerful as the spirit job, but works quite well. Before doing it, I noticed that ALL my spells were going awry: candles falling/breaking/going out for no good reason or refusing to light up, strange wax forms, interruptions out of nowhere, etc. After doing it, things started to flow normally, allowing me at least to perform without setbacks- and results appeared, even if not definite.
Any other badass preliminary/ complementary techniques, experiences, frames of mind you guys know of for an "indestructible" target?