McIsaac leads Moosehead defensemen in goals and points and earned a spot on Canada's World Junior team.
"Mac's been really good. I really like him," Horcoff said. "He's a polished kid, he's quiet, doesn't say much. He's real physical and aggressive on the ice, which I like. He's got a good first pass. He's the main defenseman on a real good Halifax team and he also made the World Junior team, which is no small feat."
Horcoff said McIsaac is a good all-around player.
"I love his compete and his physicality," Horcoff said. "At least once a game you see him step up and pop a guy. He's not afraid to mix it up. He's got great compete. He's got really good hockey sense, probably the thing I like most about him."