18 Comparison of individual knowledge items for control group and those in the treatment group that said yes to receiving educational materials .............. 27 19 Comparison of individual attitude items of boaters in the treatment group who said they received educational materials versus the control group ............. 28 20 Comparison of individual behavior item scores of boaters in the treatment group who said they received educational materials versus the control group ... 29 21 Effects of knowledge, attitudes and experiences on boaters' behavioral intentions .............. ... ................................. 29