He played HS hockey for Curt Giles at Edina High School, in arguably the best hockey town in the USA. He won a State Championship with them in 2019, which is kind of a big deal around here.
He and his older brother(D1 QB, great baseball player) are uber athletic. Father used to coach the football team, and ran(runs?) the weight room. Boltmann is strong, fast, and is simply a born athlete. I have no idea how, or if he his game will translate to the NHL. He certainly is very good at the HS level. I believe that he was one of about 7-8 players nominated for the "Mr. Hockey" award for the best HS player in MN. I have seen him play quite few times in previous years. Nothing stuck out other than that he acquitted himself well playing against guys 2-3 years older than him. Simply a good two way Dman. Like most MN players, can really skate, though I'll admit that I was surprised to see him go before Kaiser, who has fantastic wheels.