Check out this wonderful quilter's video on how she quilts on her boat. She has the first video on Oct. 18, 2020 & the second one on Oct. 21, 2020. (scroll down a bit on the blog). I think she had another one or two but can't find them right now. Some of what she does may help you & if not, it's sure interesting viewing.
http://myquiltodyssey.blogspot.com/s...&max-results=7