Which are wheels for Getaway?

I am getting mixed up info about CatTrax from different dealers. In the Hobie catalog they have models #1621, #1622, #1628 with cradles.

1) Which one is the right one for Getaway?
2) Will other fit or is there only one?
3) Do I need Cradles?

Thanks

1621 and no cradles, unless you want hard plastic wheels instead of inflatables. In that case, get the 1626.

Personally, I'd get the 1621 if I had a Getaway.

Brian C