Stripper is less friendly to gelcoat.
I still prefer the heat gun, but heat can be angry with gelcoat, too. I've given up on both with the 13' Boston Whaler project. As long as you are in a well vented area and work quickly, heat is ez pz on a wood boat. You can run a fan or some such inside the hull.
But stripper will work on wood. I just worry about what it does to adhesives of yesteryear and poly resins, etc.
The sides of this boat were white before the heat gun. The concerns about lead are more related to particulate, and you can alleviate that with N91 mask or you could go a step up with a respirator. I actually have gotten more wicked fume hits by far from stripper.
The varnish wasn't even close to final, and I was deciding which hardware to keep from 2 boats, not really a workbench!
[url=https://flic.kr/p/cGnHmd][img]http ... .jpg[/img]Carver in garage by
fallguy1000, on Flickr[/url]