I'm wanting a kayak also and have been considering the Ride. Let me say that I am short, stoutly built ( OK fat, LOL ) and old enough for my joints to be pretty stiff. Do you think the Ride 115 would be safe for a 300# guy? How stable would it be and can you stand in them like I see some kayak makers advertise? Is there any other information I should know about before I do something this spring? Would the Ride 135 be better for me? Thanks in advance.