There is an extension that attaches to the rear area under the seat that extends to accept the 3 up seat and latch. The hulls for the 2up and 3up are identical, the 3up just has pieces bolted on to make it longer. The extended rear platform may make it a little more stable but most of it is at the waterline, if the 2 of you can board without tipping you can ride.
They make a 2 up comfort seat that makes riding more comfortable as it's more padded.
There are threads about converting 2up to 3up to see the parts you need.
The one difference the 3up has is it comes with the sticker certifying it as a 3 up for CG in case you pull a tube, etc. with a spotter, you'd get a ticket if you converted a 2up and did 3 people.
Quoting so you'll see my previous reply.Thanks guys for the info, appreciate it. I had a look at the platform extension and comfort seat.
You say there is an extension that attaches to the rear area under the seat that extends to accept the 3 up seat and latch. Is this a different modification to the rear platform extension? If so could you just do this extension without the platform? This is keeping in mind that it would only be 2 people on the ski.
Thank you for the photos, it makes sense now.Hi, the rear platform is a separate piece and while it may add additional buoyancy I think it's mostly to make reboarding easier when you have 2 or 3 people on board.
Here's the seat extension I'm talking about, plus you need a 3 up seat or 3 up comfort seat because the latching pin is farther back.
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