I don't want to create a perfect human form.  The leg shape I require is below (two simple lofts). The 2nd image shows the kind of torso I am after, but I want it to blend nicely into the two legs.  The 3rd image shows where i would like curves/fillets.  The fillet command wont work and neither will face fillet.  I created the torso in the 2nd image by extruding a sketch from between both legs, half way through each leg.

I hope to make a fibreglass mold from this that I can stand in (long story). In current form it wont be very comfortable

Any help or advice would be much appreciated.

Robin