Mathematica solution, large tip

angle = 35; lst = {{0.6,
   0}, {0.35, .05}, {-.1, .15}, {-.4, .375}, {-.15, .1}, {-.15, -.1}, \
{-.4, -.375}, {-.1, -.15}, {.35, -.05}, {.6, 0}}; tlst =
 Function[x, {Extract[x, 1] + .6, Extract[x, 2]}] /@
  Function[x, RotationMatrix[angle*Pi/180].x] /@
   Function[x, {Extract[x, 1] - .6, Extract[x, 2]}] /@
    lst; WriteString["stdout", \
"\\pgfarrowsdeclare{anglelatex'}{anglelatex'}\n{\n  \\newdimen\\len\n \
 \\len=\\pgfgetarrowoptions{anglelatex'}\n  \
\\pgfarrowsleftextend{-0.4\\len}\n  \\pgfarrowsrightextend{0.6\\len}\n\
}\n{\n  \\newdimen\\len\n  \\len=\\pgfgetarrowoptions{anglelatex'}\n  \
\\pgfpathmoveto{\n  \\pgfqpoint{",
 ToString[Extract[Extract[tlst, 1], 1]] "\\len}{",
 ToString[Extract[Extract[tlst, 1],
    2]] "\\len}}\n  \\pgfpathcurveto\n  {\\pgfqpoint{",
 ToString[Extract[Extract[tlst, 2], 1]] "\\len}{",
 ToString[Extract[Extract[tlst, 2], 2]] "\\len}}\n  {\\pgfqpoint{",
 ToString[Extract[Extract[tlst, 3], 1]] "\\len}{",
 ToString[Extract[Extract[tlst, 3], 2]] "\\len}}\n  {\\pgfqpoint{",
 ToString[Extract[Extract[tlst, 4], 1]] "\\len}{",
 ToString[Extract[Extract[tlst, 4],
    2]] "\\len}}\n  \\pgfpathcurveto\n  {\\pgfqpoint{",
 ToString[Extract[Extract[tlst, 5], 1]] "\\len}{",
 ToString[Extract[Extract[tlst, 5], 2]] "\\len}}\n  {\\pgfqpoint{",
 ToString[Extract[Extract[tlst, 6], 1]] "\\len}{",
 ToString[Extract[Extract[tlst, 6], 2]] "\\len}}\n  {\\pgfqpoint{",
 ToString[Extract[Extract[tlst, 7], 1]] "\\len}{",
 ToString[Extract[Extract[tlst, 7],
    2]] "\\len}}\n  \\pgfpathcurveto\n  {\\pgfqpoint{",
 ToString[Extract[Extract[tlst, 8], 1]] "\\len}{",
 ToString[Extract[Extract[tlst, 8], 2]] "\\len}}\n  {\\pgfqpoint{",
 ToString[Extract[Extract[tlst, 9], 1]] "\\len}{",
 ToString[Extract[Extract[tlst, 9], 2]] "\\len}}\n  {\\pgfqpoint{",
 ToString[Extract[Extract[tlst, 10], 1]] "\\len}{",
 ToString[Extract[Extract[tlst, 10],
    2]] "\\len}}\n  \\pgfusepathqfill\n}
  \\pgfsetarrowoptions{anglelatex'}{8pt}\n\
\\pgfkeys{/tiplen/.default=8pt, \
/tiplen/.code={\\pgfsetarrowoptions{anglelatex'}{#1}}}"]