Answer: They all use nets.
A couple people were on the right track, but didn't finish it out... that's Melkor and mythosx. Everyone else got it right: DarthFerret, EricBess, Limited, Mooseman, Oversoul, Ransac, rokapoke, sageridder, TomB, train, and turgy22
Scores:
EricBess: 14
TomB: 14
Oversoul: 13
sageridder: 13
train: 13
DarthFerret: 12
rokapoke: 12
Melkor: 11
Ransac: 11
Mooseman: 10
turgy22: 9
Limited: 7
Lythand: 6
mythosx: 6
cardboardbox: 0