Hi Cecee,
I can imagine you are having a tough time working out HOW to soak a whole leg (unless you have a very big bucket!!), but probably just as good if not better is to shower daily and during your shower to run luke warm water from the shower over the wound. Dont put soap in the wound. The idea is to wash away any pus and dead cells from the wound, but not to be so rough with it that you make it bleed. It should be covered up with a dry dressing after that unless you have been given other advice.
All the best,
X C X