i have floated the snake, grand ronde, missouri, clark fork, yakima, spokane, coeur'd alene and columbia rivers with the boat. also many lakes. the roughest river is the biggest one which is the columbia. they have 3 sizes now and the front is v-shaped. when i bought my 2 boats 15 years ago only one size was available and the front was square so when it is windy water comes over the front. they are light ,26 lbs. and fit in a bag with pack straps.