Chanel is cotton coated - I do her legs with her laying down with SISSORS - never a trimmer -- it seems to work for me....this really wouldn't work for a silky coat but then they don't need much trimming....
for feet - Yorkie Rose told me this trick
bend one backwards ...cup your hand around the hair & foot so it surrounds the bottom of the foot and clip straight across even with the pad.
here's a shot of me doing Chanels legs....I cut her at an angle that day...but you can see where I brushed the hair flat ...she had to sit very still...then just cut a straight line to her shoulder. I don't know if this is the right way to do it but it looked nice when I finished