There's a common expression athletics that there are no shortcuts. If you are training to get better, you can certainly try to get around the training program's rigor, but the only person you're going to be hurting is yourself. I found this is also true and trying to fix things around the house. After spending the past few summers patching up parts of the brick wall, I decided to dispense with traditional mortar, and use a prepackaged mortar tube with a caulking gun. I figured this would be much easier, and would save me some time to cut down on the mess from years past.
It didn't happen. It turns out that while traditional mortar is easy to manipulate, this synthetic sticky chemical compound was far more difficult to manage. While the final product might look a little bit better, trying to take the shortcut resulted in me spending hours trying to clean my hands afterwards this morning. Traditional mortar washes off easily, but the stuff looks like it will be sticking to my hands until the skin cells die.
The moral of the story? Hire someone who knows what they're doing to fix your wall. If you must fix it yourself, stick with what you know. Everything else will likely be messy.