Finally some further progress.
Sanding... I'm not a huge fan but it is important enough. If you want to know what sanding canvas filler is like, take a sheet of 220 sandpaper, and a sheet of 120 then sand the 220 With the 120. The filler has silica sand in it, so I am sanding sand, basically, which is why it is important to get the filler as smooth as possible when putting it on in the first place. This one came out about the smoothest yet, so it took little to knock the bumpiness down. The next step is to use 3M spot putty to take out the worst areas. If you watch the Adam's Rib video, when you see him sanding the canvas, the red areas are most likely the spot putty, it is used to get rid of irregularities and provide the nicest finish possible. When the canvas is stretched around the boat, every little variance in the planking shows up. High edges can be filled, the stripe around the bow of this canoe is from a high thread in the canvas.
On this one, when we replaced the 5 ribs in the middle, we somehow lost the boat shape in the process, a first for me and no matter what we tried, fiddling with the ribs last summer, we couldn't get it back. So now, I will fill the offending shallows with filler and get it back that way. I could leave it without affecting paddle-ability, but I want it to look half decent. This is where SG will cringe since this will add weight to the boat, but, considering we expect this to be around 80 pounds when done, a couple extra pounds for filler won't bother me.
Now I just need to wait and continue to add filler until it is fair. Then it will be a high fill primer, sand, primer, sand then paint. Any proper boat enamel, such as Kirby's, Pettit, Epifanes or Interlux would be super high gloss, like the one in the canoe therapy thread. We did that on the first boat but it shows every last little no-no in the hull, so now we go semi-gloss. With the high end boat paints going for about $50 a litre, we opt for Tremclad Rust Paint at less than half the cost. I mix my own colours so I add a flat paint to the gloss to get the sheen I want. Our plan for this one is a dark burgundy with gold striping. It may need to warm up a bit before we get to that.