I have a block, which is a circle over a wipeout. This creates a
"hole". Not sure what version you're using, but R14 or later should
(You'll have to make a polygon for the wipeout, not a circle.)
draw a polyline (make it on a temp layer that won't print) over the objects
that form the boundary of your hatch.
put in the cirlce where you want your "hole".
make sure that the island detection in the advanced tab of your hatch
command window is set to normal.
select both the boundary and the hole when you hatch.
that should do it.
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