Shell Shock options?

Greetings all,
I'm just finishing up a prop weapon build (large circular glaive) based on Foamular. I used Smooth On Shell Shock to seal, looking for the additional strength, stiffness, and durability. I'm pretty happy with the end results; but the road there made me sad...

Even using the Slow, it turns to peanut butter much too fast to get any appreciable amount of coverage without waste, even mixing down at 2oz a pop...Much more fighting with the brushes than desired, too. I really like working with the pink foam, and would like to do more, but would like more solidity than nine thousand coats of mod podge.

My question is: does the Smooth Cast 300/320 series brush on smoother and work as well? Or is there another option I haven't some across yet?

Thanks in advance!
Mark

 

I've not used it myself but there is a gentleman that has done a lot of Iron Man work that put up a video a long time back using what appears to be smooth cast 650 over a few coats of white glue.

https://www.youtube.com/watch?v=MDwQg6CX25A