I rule the midnight air, the destroyer, die by my hand, I am Creeping Death.
just lay it in places people are likely to go through/run and hide at
for example, I would place the tripmine on sandbox at the middle way between the two "buildings"
or I would try it at the entrance next to the spartan lazer around the corner
try playing big team battle and hope for sandtrap LOL
btw I havent killed anybody with one, so dont get mad, bc I havent tried yet, but this is my advice