Whoa, fellow boaters - I just stumbled on this game-changing mod for inland tow boats that I’ve been testing on the Mississippi runs, and it’s slashing fuel burn by up to 12%! Swapped the standard prop hubs for these lightweight carbon-fiber ones from a small US fabricator (sourced via a forum tip, but refined it myself with a custom pitch adjustment). Paired it with trim tabs synced to GPS current data - wakes are smoother, push is stronger against headwinds, and no cavitation issues even loaded heavy.
Towed a 3-barge string from St. Louis to Cairo last weekend, and my Cat 3516 purred like never before. MPG jumped noticeably, and the captain was grinning ear-to-ear. Total cost under $2k, install in a day at the dock. Has anyone else tweaked props like this on US river tows? What gains did you see? Post your setups and let’s compare data - I’m itching to try river-specific foils next! 🚀