For the uninitiated, here's at least a piece of what Grinnell shoots for:
It's a "run and gun" offense with offensive possessions often lasting only five seconds in duration (12 seconds at the most), usually resulting in a 3-point shot. Grinnell tries to get over 100 shots per game and over 50 - 60% of those as 3-point shots. They crash the offensive boards with four rebounders, going for the long rebound off missed 3-point shots.
Defensively, Grinnell full-court presses the entire game, using several press defenses, forcing the tempo, trying to create turnovers. They usually force about 28 turnovers per game, but their goal is 32. These forced turnovers often result in easy baskets in transition. Half-court defense is not a huge priority... opponents may score in the half-court, but Coach Arseneault believes his team can simply out-score them using their offensive system and their press defenses.
Of his 15 players, Coach Arseneault will typically have 4 - 6 squads of five players (various 5-player combinations) that he uses. He will substitute five new players every two minutes or so, keeping fresh legs in the game at all times, wearing the opponent down by the end of the game. Many players will get playing time and no-one plays the entire game. You will need two or three good point-guards who can score, otherwise forget this system.
There's a high school coach around my way who runs the system, but with much less success. His team shot 4% from the arc on like, 50 attempts against my brother's school.