I am about to attempt covering a dynaflite decathlon with coverall using polycrylic for the first time. I have used koverall in the past using sig dopes. After many searches, the process seems to be:
1.seal the wood with two coats nitrate dope and sand
2.apply koverall with dope around perimeter
3.second coat around perimeter
4. Shrink koverall with iron
5.apply 2 coats polycrylic , sand
6.2-3 more coats poly, sand between coats
7.spray high build auto primer, sand
8. Spray with krylon
9. Fuel proof it (I'm using glo)

I did a test with the above process and I have 2 questions:
The covering didn't get all that tight, did I not shrink it enough? My iron was on high and I spent a fair amount of time on it.
Can I use nelson to fuel proof or lustercoat.

Thanks!

You should only need 2 coats of Poly to fill the weave and then you can put on your rib tapes if you want, then one or two more coats of Poly but slightly thinned with water. It will be tight after you put on the first coat. Use 600 grit to sand the overlapped edges after the first two coats. Don't oversand or you will raise fuzz. On sheeted areas where you want fake metal panels you can put on the high-fill primer and sand.

I do more coats of Polycrylic and use high-fill primer when I finish with glass cloth on WW2 type planes.

Jim