I see no reason to boil and use Bololo. Either method (assuming 10 min boil) kills the MAC and I'm not sure what sanitizing twice would help. I prefer Bololo since it decreases the chance of contamination by handling. I put equipment in there and leave it until next use. When I boiled, I had to get equipment out to dry-increased chance of touching and contaminating and paper towels are clean, not sterile. It's a good method if space is limited, for travel, etc.

I also prefer not handling so much boiling water-burns hurt.

Everyone has to figure out what they're comfortable with. It's your decision if you need to double sanitize.