I always used GIMP for any photo editing on linux because all the half decent basic Microsoft Paint type applications had 600 mb worth of dependencies. I don't know what distribution you're using but as far as I'm aware it's in the repositories for pretty much everything.
I think you've got the right idea with a gusset, it would sure save the effort of having to notch more tube
oh, im slowly getting the hang of gimp, but seriously...when you just want to draw a simple line, or arc, or circle... what used to take 5 seconds on paint takes a half hour of headbanging frustration with GIMP.... but each time you do take on the challenge...it gets a bit easier.
i wish it had a "basic" version, without all these options, that i dont want to deal with at the time... i want to draw a triangle, not learn how to use a program all over again! WTF is a layer? cant i just select colour, and draw an arc? no... have to do seventy five different things.
mind you, ive used it on nearly every picture ive uploaded on here, the image export function, i do like
just took me a while to realise what to do. its such an alien program compared to everything ive learnt on
like hitting alt ctrl f7 after getting into terminal rather than just restarting!
i wont even mention how long it took to get a graphics card to work! or sketchup, that then required the graphics card after installing various add-ons that were great but made it lag terribly.
lately its been freezing when i open google maps.
almost as annoying as the "microsoft mobile" OS on my phone that wont play WMA files? first phone ive had that wont play them! i thought WMA was microsoft?