I fish in some shallow waters (1.5 to 3 ft at times ) in the Flint in middle Georgia. I have always been very careful to not hit too many stumps, logs, etc. But still happens, second season, 2 props ruined with 40 hp Johnson and 16ft boat. Ordered a Mac River Runner prop guard from Cabella's... The best money I ever spent. Had boat in the water 8 times not a ding, bend, or nick yet! And I have hit some stuff! This thing does great on stumps, logs, rocks, and sandy bottems.