Maine's three-venue model: Northern regionals at Cross Insurance Center in Bangor, Southern regionals at Cross Insurance Arena in Portland, then state finals at the Augusta Civic Center. The Augusta Civic Center is part of Maine's basketball identity — 'Tourney Time' is one of the better-attended state tournaments in the country relative to population.
National Prep Tournament in Fort Walton Beach, Florida takes both high school and post-grad programs. Applications stay open through October 31. If you want a competitive early-March slot without invitation-only barriers, this is the one to apply for.