it is almost impossible to pull a 100' net while standing in muck.
It must make a lot of difference in the hole size. I have a 100' seine with 1" holes and it isn't that hard to pull. I don't catch the little fish which I'm sure helps. I love to seine as much or more than fishing. It does take practice though. I don't know how you pull it out of the water but one thing I have learned is to drop the end ropes and pull the seine out and set it on the bank as you walk towards the other guy. Does that make sense? It makes it easier to get it back into the water to go the other way.