The way I read it, is that along water ways is the only way that you are restricted to 110's, and only within 50' of the water way. Other than that it's a 16 inch max.
1. Steel foothold traps used for water sets, must
have an exterior jaw measurement of nine (9)
inches or less measured at the hinge of the
trap. Steel foothold traps used for ground
sets must have an exterior jaw measurement
of seven (7) inches or less measured at the
hinge of the trap. Steel square instant-kill
traps must have an exterior jaw measurement
of sixteen (16) inches or less measured at the
widest point, and steel circular instant-kill
traps must have an exterior measurement
of twelve (12) inches or less measured at the
widest point.
10.For ground sets adjacent to waterways and
no more than fifty (50) feet from the shoreline, a trapper may use a 110 body grip trap, or
its equivalent, with a maximum exterior jaw
measurement of six (6) inches wide by six (6)
inches tall. Such a trap shall be a single-spring
trap with a factory spring designated for that
trap. The lowest point of the trap closest to
the ground shall be no more than one-half
(1/2) inch above the surface of the ground.
The trap shall be used as a non-baited or lured
set unless it is set at a minimum of twelve (12)
inches inside a hole, den, or cubby