I disagree, to a certain extent. On regular cigars, you cut the cap of at the shoulder, just where it begins to curve.
On a torpedo, you cut it where you enjoy it the most. The smaller the opening, the more intense the smoke, as it is funneled through a smaller opening. The larger the openeing, the cooler the smoke ...
I have never cut the foot on a double torpedo. Just light it! I've never had one yet that didn't have a tiny opening, and that is where you will get the most intense flavor of the wrapper. Sometimes that is my favorite part, the first two or three puffs.