I've got the higher high DP pipes on my 92 track bike and my size 12 heels sometimes hit the pipe on the right side because I also keep the balls of my feet on the pegs. What really spooky is when I'm hanging off and my high-side heel starts resting on the upper swingarm brace thingy. At first I thought the bike was flexing like crazy because I could feel this movement under my feet but didn't see how my foot could touch it. Then I figured it out. Also explained how the heel of my right boot has a burn all the way around on the outside

Apparently from getting in behind the pipe when touching the swingarm.