the lemond rule as-is has worked for me well for set ups with platform pedals. i just did the straight equation and set the seat based on that number. great! using that number for proper clipless pedals hasnt worked out so well. ive also recently made the switch to spd-sl from speedplay so there is still a learning curve i need to adjust too. overall though, spd-sl's with my current road shoe are at least .75 inches lower then a toeclip and soccer shoe/skate shoe set up on my city cruiser. ill lower the clipless setup and see how that goes.