Here you can see my new balsa core cut to size, sitting next to a bed of wetted base... I flexed out all the balsa and wetted each edge...

This is what the stuff looks like up close... I took my time and got resin on each edge to "seal" it before it went in...

Here is one piece in place...

I'm going to use some epoxy/filler to fill in any gaps in what I missed and shape out that curve in the middle... IN some crazy part of my head I thought the original pried up piece of glass/gelcoat was going to go back in, but there is no way I am doing that... it'll just leak an ruin this work again... nope I'm in for a penny, I'm in for a pound... I'll be glassing this all in and gelcoating it I'm sure it'll be "FUN." NOT.
By the way earlier comments about the traveler... were SPOT ON... there were some pretty huge dings in it... and I have so many projects on my plate right now that I'll replace that if I can afford it, if I can't then it'll go back in... For now I sanded down the dings, and oiled up the car... I hope that'll keep it from being useless. When last I sailed it, I didn't have any "catches," but now I'll be paranoid looking for it.
Wish me luck and feel free to tell me I am doing it all wrong. Yell at me before I destroy something.