I built a bow using West Systems epoxy once. I think that boat building was it's primary purpose. I built it for a guy who wanted to find out if it would make a bow. He provided the glue and cost of materials and I made the bow.
Study your glue specs to make sure of how much working time you have!!!!
This West Systems stuff gave only just enough time to lay up the bow and that was doing it in a hurry. By the 20 minute mark, just after inflating the hose, the glue had melted down the plastic cup that it was mixed in and was rapidly setting up.
The bow was a 66" ntn flat bow. I shot if for a few weeks before passing it on the the owner. It shot just fine. About a month later he reported that the bow had broken while his brother was stringing it. I'll never know if it was the stringing technique or the glue.
In any case, I would not use it again. Too runny and not enough working time.
Smooth-on is cheap insurance for good results, IMO. If not having an oven is the problem, then put it in your car in the hot sun with the windows closed tight and leave it there all day.