The effect of a pile driving shoe can be accounted for in OPILE by using two steps:
Add a small section at the bottom of the pile in the pile_dimensions input with the property section which would represent the pile shoe.
This usually means an increased wall thickness, whilst maintaining the diameter the same.
Adjust the skin friction factor to account for the degree of internal friction which is mobilised during driving. The selection of the skin friction factor would depend upon the methodology used.