Bob, before you do the coat of Future…I’d recommend you checking out the NMF Group Build going on right now.
Try starting here. That way you’re not wandering through too much boring forum talk. Start there and move forward and you’ll see the general discussion unfold for you between everyone in the group. Generally though you don’t need to apply Future or any type of clear coat to Alclad on account of the fact that you should already have a very pristine surface that is very smooth. The decals will adhere without any trouble. However, should you weather your B-29 and want to protect it, there is a Light Sheen offered by Alclad that wont detract from the shine too much. Just lay it down in light coats…very light coats. It will provide for a weather-beaten warplane that looks the part. =]
That’s the short version. Give it a look see.