I'm trying to find some nice reflective line for tie outs. I have some 550 type stuff but it stretches pretty bad over night. I've been looking for something along the lines of a Dyneema line. I've found 50' lengths of Dyneema with a poly sleeve but they're asking $25-30. This 1.8mm stuff looks good but I can't find it in less than 1000m spools. It comes out to about $0.142 a foot.

Anyone know where to get this stuff at a reasonable price/length? And as far as real world experience/application, is the visibility of a reflective thread better than say Dynaglide or Zing-it?