Then change your personnel, take Harrison off the field and replace him with another DB, or switch to man coverage, use Harrison as a pass rusher, NE used alot of 3wr, te, RB sets, you rush at least 4, that still leaves 7 in coverage vs at the most 5 pass catchers if the TE and RB go out, hell you could even send a 5th or 6th guy sometimes, what a novel concept.