The last couple of years before retiring I squeezed a double pedal under my desk, with a bass drum trigger pad. I would spend the working day doing stuff (in fact, very little, being the IT Boss, so delegating what little needed doing, as all had already been done...), whilst pedalling away with rudiments, basically much like snare exercises. It lasted for over a year before the Director asked me, politely, to desist, as he felt it gave the wrong signals to some of the staff. I was getting quite good at double paradiddles, flams and the like, but complied for the sake of peace. It's a pity that the relative expertise developed in this way has not, as yet, evolved into a workable addition to my playing with the full kit. Occasional 'blast beats' (the climatic ending to RATM's Killing In The Name Of', for instance, and some moderate success adding triplet 'patters' to Buckley's 'Grace'), but not really at ease for much else. Old dog, new tricks, I suppose...