Just make the holes big enough for your net.
that isn't that big my uncle used to run gill nets under the ice
cut a hole and put the Jigger through the hole , this was like a kids sled with runners and floats that was brightly colored and had a cam on it pull on the line and it pulled the cam then let go and let it propelled it's self along under the ice sort of like one of those kids toy cars that you pull back then let go and it runs forward under spring pressure , when your about to run out of cord your partner who has been following the brightly colored sled under the ice cuts a hole for it to come out , then the net is pulled through under the ice with the line from hole to hole.
when the ice was to ruff to use that they cut a hole every so many feet and pushed boards nailed together under the ice with a line till they got to the next hole
they had a bottomless fish house that they pulled with an old snowmobile they could pull the net from in the house then pull the line from the far end and set it again under the ice