There are 5 D & J Harmon HARMON ROCKET II aircraft on the U.S. registry that TailWiki has a page for. Every one is built from the public FAA record — year, serial, engine, home base, and registration history — and owners and pilots add photos, trips, and stories on top. The ones listed here were built between 1999 and 2007.
N145HR
2007 Neufeld Mark Wayne HARMON ROCKET II
Coeur D Alene, ID
N251BR
2000 Rich Beryl G HARMON ROCKET II
Brush Prairie, WA
N62032
1999 Boyer Tom HARMON ROCKET II
Dayton, OH
N86WR
Rice/Ross HARMON ROCKET II
Wilmington, DE
N990AP
Massey Aircraft/Poteete Andy HARMON ROCKET II
Creston, CA