I had a whaly 435 (non R) a few years back with a yam 30 with PTT. It was a very solid little boat and flew with that motor but soaking wet in any sort of head sea and very slammy.Id say it convinces you it is a rib by having a plastic hull but it behaves much more like a sib in the chop. There was a lot to like about it and i think for a professional user / club boat it would be ideal, but for a leisure boater on the sea it is really uncomfortable compared to a similar sized rib.
I always liked the look of their 5m drop bow model though
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