lesson learned from yesterday about using nails. We use them on long lines, did a line about 400' long. Actually, there were 6 lines that long. Used 2" nails with mason line tied between them. After we painted the lines, I went around and picked up the string and nails, but somehow missed one. About 20 minutes later, a woman walking across the parking lot stubbed her foot on the nail, causing her to fall. She bruised her knee and scratched her had pretty bad. I felt terrible! I've spent the better part of my life in the fire service before I started this business, and this was purely an accident...but my fault. She was very kind, and not upset in the least. I got VERY lucky! From now on, I'll be painting my nails with high vis orange before use. In fact, I don't know if I'll ever use nails again. I like the idea of a one gallon paint can with concrete. Much easier, faster and less likely to have problems.