I use a bulk film loader and load my film in used film cassettes. You can get the cassettes free from boots or any high street developing store if you ask politely. There is just enough film stuck out to tape your new film to, I use the thin brown parcel tape on both sides, this slips through the felt light trap easily.
Watson manual
http://www.cameramanuals.org/booklet...ilm_loader.pdf
You tend to waste film using short lengths due to the film leader. I always load 36-38 exposures and take lots of photographs; unless I am trying a new film/developer combination then its 12 exposures.