If the Dahon Mariner D7 is one you're considering, it seems like a perfect match for you seeing as it was designed for boaters. The Giant Halfway looks very similar but there is not much info on its fold size. Though both are aluminum frames (good for marine conditions) the Halfway is a couple pounds heavier than the Mariner D7. As to comfort - only you can judge that for yourself by test-riding both. You're lucky to have the opportunity to do just that. Let us know what you settled on and why.