Water Bikes, Chili Pontoon Banana Water Bike Inflatable Kayak Bikeboat for Lake, Water Sports Touring Kayaks Sea Pedal Bicycle Boat for Sport Fun Fishing… (Chili-WaterBike)

There is much to like until you get in the water. Arrived well packaged. Sturdy pontoons and excellent hand pump to inflate. Fun to assemble. Easy to move, relatively light.But: It was very hard to find a comfortable cycling position. Even tho I am 67 inches tall with a 30 inch inseam, I needed to raise the seatpost almost to the top. Then the handlebars were too low and far away. I placed the handlebar on the near side instead of far, just clearing my knees. I replaced the seat and tilted it forward and slid back which helped, acceptable position achieved.It is impossible to pedal smoothly. There is significant friction in the drivetrain. There is no inertia or momentum (like a bicycle or exercise cycle flywheel has) so the pedal stops instantly at the bottom of a stroke and you start nearly from stop with the other foot, 100 or more times per minute.I replaced the pedals with clipped (Crank Brothers) pedals and wore my cleated mountain biking shoes which helped quite a bit. Now I can pull the pedal around on the bottom and up on the backstroke to smooth out the pedalling. But the boat only goes 4 mph with normal pedalling at 55 rpm. The pedalling is still too unnatural and uncomfortable and NOISY and VIBRATORY to spin faster and THE PROPELLER IS WAY TOO SMALL! That's at least one star off.Nearly all the work in pedalling is friction in the drivetrain. The propeller seems to spin in the water without any resistance nor much forward push. I could easily pedal 3-4 times harder at 40-50 rpm with a bigger prop maybe with more pitch and have to believe I could then achieve a reasonable speed.(Derek replied that a bigger propeller has been designed. I hope and believe this would change my Chiliboat into a reasonable water conveyance!)Details: All the pieces are very good quality. The frame comes in a sturdy box, I did assembly conveniently with frame placed on the side of the box. Recommend finger tightening hooks to pontoons before full inflation and fully snugging later. Don't shove the drive tube into the frame as far as it will go as this adds friction from the drive shaft rubbing inside the tube. Do not lose the pedal wrench as it is nonstandard/custom shape and there are no wrench flats to otherwise grip with. (And consider replacing the seat [at least tilt it forward some] and pedals and handlebar post depending on your cycling style.). It's easy to carry the boat if you step inside one pontoon and lift the frame but very awkward if you stumble, I recommend dragging for safety.In the water, it's a fun toy! Quite nimble forward and reverse. It handles like a short wheelbase car on RR tracks with any waves at all and you are a big sail in the wind. The pontoons skim easily thru the water though there's a slight bow dip from the propeller pushing at a slight upward angle. The drive tube and skeg fin add annoying drag. There is practically no splashing (you stay dry) with waves under 6 inches. Definitely bring a paddle and rope, maybe a pole, etc.My lake kayak and Chili boat are both parked at my dock. Because of the tiny propeller, the kayak is actually a little faster at similar effort, coasts better and is probably safer in big wind and waves. However, it is an effort to get in and out of the kayak and it's frightenly easy to roll over with a top heavy load. I like bike riding and think the Chiliboat would be more enjoyable on a calm day and reasonably efficient for travel if the toy propeller were replaced with a bigger one.