lamination schedule question

[erebus]

I'm doing some laminating with 2 layers of 3/4 coosa/penske and west system epoxy.
Couple of questions for you glass gurus:

Do I need to put a layer of glass between the layers of coosa/penske (mat, 1708, straight cloth), or just thickened epoxy?

After putting down a layer of 1708 (mat side down) do I need to put a layer of mat (epoxy compatible if I can find it) on the cloth side of my 1708 before putting down the next layer of laminate (if the next layer is not 1708, but is coosa/penske or outside skin)?

Is 1708 sufficient for tie-ing together old skin and existing hull (after a nice 12:1 scarf)?
Should I finish with a layer of straight cloth to make fairing a bit simpler? What weight?

I've been searching the forums for hours, and these are the only questions I have left.
Thanks!

[Islandtrader]

What I have done...not necessarily correct, but it worked for me.

Do I need to put a layer of glass between the layers of coosa/penske (mat, 1708, straight cloth), or just thickened epoxy? I did put a layer of 1708

After putting down a layer of 1708 (mat side down) do I need to put a layer of mat (epoxy compatible if I can find it) on the cloth side of my 1708 before putting down the next layer of laminate No(if the next layer is not 1708, but is coosa/penske or outside skin)? No

Is 1708 sufficient for tie-ing together old skin and existing hull (after a nice 12:1 scarf)? Yes as long as you stagger the layers
Should I finish with a layer of straight cloth to make fairing a bit simpler? What weight? I did not...I just sanded the ruff stuff off first, and then started the fairing process.

Some others may have stronger opinions and if they do they will chime in.

Again everyone has there "own" way. This is my way.

[Normagain]

I used 1708 6" from Jamestown to do my tabbing together with some six ounce cloth. Recently, I purchased some ten ounce HEXCEL 7500 cloth for my floor and like working with it MUCH better than the six ounce. There is a guy on ebay who sells the HEXCEL 7500 epoxy compatible at good prices. Just type HEXCEL 7500 in the search function. I didn't put any cloth between the sheets, just cabosil/epoxy, but I used one board of Coosa and one board of marine ply. I built my transom from the inside however.

[erebus]

Thanks guys,
I'll take your input, some of what "just seems right for the project", add a little guesswork and wing it!

That's pretty much how I got through college.

[Normagain]

Forgot to mention, used various widths of cloth tape for tabbing as well... getting old and this little fever is not helping either!