���I like to us a scraper, but I also like a coarse rat tail file for drips and runs in epoxy. It works well on convex curves like on the outside of the dory.

I used a cabinet scraper, too. But be sure to round the corners of the scraper with a file and even then be cautious when scraping. I put a substantial gouge in my epoxy with the corner of my scraper when I got a bit careless.   

Cabinet scrapers are really useful tools, whether used in a frame providing handles or just 'bare' by themselves. Trick comes when kearning how to sharpen them: file straight, true & 'square' then use a hardened burnisher to raise a wire edge on both sides. Whether large or small, that edge is what does the cutting!

Frames are designed to 'warp' the blade into a shallow curve, so that those corners aren't exposed. Freehanding a bare blade takes practice, you warp the blade with your thumbs to form the curve at the cutting edge.

Single-edge razor blades can be pressed into service too as 'disposable' scrapers needing no sharpening. Short-lived edge used this way but maybe all you need!