So... I thought I'd make it this time and build some boards without having to ask questions, but oh well...
I finished shaping a 6'4 singe fin, which went pretty fine. first time used a planer, that went allright-ish. skinning the blank went smooth (I now much prefer to skin my blanks and cut the outline afterwards), I also cut my rail bands with the planer, that went fine as well, and I used the planer for the concaves. final sanding didn't turn out too smooth, but nothing a little spackle won't fix.
So the fish I'm currently working on, I thought, well, Ima do the rails with the surfoam again. turns out, my rails are way bumpy. my outline is fine, it really is "only" the rail bands on the deck side in the middle part of the board.
So my question is, will I be able to fix that without my rails getting too thin? what would you recommend how I approach this - coarse sanding block? fine sandpaper and foam? surfoam? planer?
I have searched the archive, but I mostly got results for bumpy outlines and I found one post of tenderloin tom from 3 years, in which he says that his rail bands aren't bumpy anymore, but that's about it.