Hit a milestone last night - finally closed up the hull!

Any suggestions for fillers to close up minor gaps and imperfections? I took care of the big stuff along the way, but I have a few spots where my joinery wasn't perfect, e.g., sometimes the "toe" of one strip doesn't quite meet the "heel" of the next leaving a small pinhole. If it were big enough I'd try to fill it with solid wood, e.g., a planer strip, but these are too small for that.

I'm planning to do a test board - glue up some strips with intentional gaps, and experiment with different approaches to see how it comes out - but thought I'd check for suggestions first.

I might try some commercial filler, e.g., "Plastic Wood," just to see if it'll work. Then, my thought is to mix up some epoxy, and test one gap with just plain epoxy, do one where I cram some sawdust in there first then apply epoxy, and finally mix the sawdust in with the epoxy first then apply. Anything else I should try? Should I sand first, or no?

My goal here is to follow the maxim a photography instructor once drilled into us when teaching us how to spot prints - "minimize don't eliminate." That is, if you focus too intently on one specific area trying to making it perfect, you end up just calling more attention to it. I'm assuming this is similar.

Thanks in advance for any suggestions! (and let me reiterate - I plan to test! :-) )