Almost never bracket, with slides or with other kind of film.
The only situations when I can take more than one exposure is with slides, the very tricky high brightness range where the bright part of the image, the one which is at risk of washing up, is also the part where you must catch the details, texture etc while at the same time maintaining a decent legibility of the shadows. In those cases I tend to bracket 0.5 EV closer than the normal one in order to be sure that the highlight detailed scene doesn't fall in a part of the slide film curve where the detail is compromised.
Imagine for instance a house with a white wall directly hit by the sun, the wall has a typical "row" finishing, you want to preserve the white of the wall but also its texture. That's tricky as the typical incident light reading will risk to place the white surface a bit too much up the film curve. On the other hand, besides the wall you have some subjects that should not be blocked too much (let's say a tree). A spot light meter would solve the problem easily: measure the white wall, open 2.5 EV or 2.66 EV and it should be dead right, preserving the wall texture while giving the most shadows that the film can record. An incident meter leaves the photographer, in this particular situation, on a shaky ground: following it blindly might compromise the wall texture, closing an arbitrary value requires an arbitrary estimation of the wall reflectivity, with the risk of closing too much, more than strictly necessary. The spot metering takes into account precisely the wall reflectivity and places it on the right spot of the film curve.
Using a spot meter is slow and boring though. I now find it easier to walk around with only the incident light meter and bracket only in those tricky circumstances. Spot metering is something that I tend to reserve for night pictures nowadays.
As far as multiple compositions of the same shots are concerned, I sometime indulge in the exercise, main variants being: horizontal / vertical, and with people / without people, when the subject lends itself to it (keeping in mind my main subject is architecture / urban landscape).