I think pretty much everyone is on to that stuff now.
I never really had the yellowing issue with the non-CE stuff that I've had with other marine epoxies.
So the CE hasn't meant any obvious benefits as of yet...but it's good peace of mind.
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I think the CE formulation is meant to prevent PU blanks from shrinking when glassed with epoxy. I've been using it on EPS with good results. Like afoaf, didn't really have any yellowing issues with the regular RR epoxies.
I think that I've glassed 30 boards with it. I made the switch to the CE from the regular RR. I use it for everything kids boards to SUPs, Pu, and eps.
Yes it sets up clear. It does have a blue tint. In full sun it looks brighter. I think the CE is thinner, seems to laminate better. I never tried it but another user said that if you use the regular RR and then do a fill coat or a seperate lamination with the CE it will look weird. The thicker the laminate the bluer the effect.