While I can use just about any method, it really depends on the marker the stock is to be mounted to. For my 98's I prefer something more more mil-sim. For your garden variety stacked tube blow back design I prefer the use of a T-stock.
I also have a PMI/Sheridan pump with a wire frame stock on it. Basically it is an L-stock with another piece going from the top of the back to just behind the top of the grip. I also find that rather comfortable.