Confirmed baldie so my best advice is as follows;
Use clippers without a guard to get your hair as short as possible.
Lather up with plenty of cream.
Use a lady razor, Wilkinson Sword do a purple and green razor, three blades that flex and don't get clogged up easily. If they do they are easily freed with a shake under the water. Don't know whether they are designed for legs or faffs but they will certainly clear lots of hair.
Keep on top of it, a day or two's growth will shave easily, a few days a you're likely to cut your head (the razor above minimises this)