Crafts / Craftsmen / craftswomen (craftspeople, I suppose)

Can anybody offer advice on this please? I’m doing some repair / restoration work on my Merlin rocket which I have had outside for a criminal length of time - lots needs doing now. I’ve finally been able to make a start on it as I’ve been loaned some garage space. I decided to start at the back and have taken the hardware and varnish off the transom. There is a crack on the right side which appears to have been repaired previously with two screws - you can see where one of them has almost broken through the wood. The crack goes out to the hull and through the thin section of one of the hull planks. There’s also a shorter crack in the transom above that one. I was wondering about a couple of small butterfly joints epoxied in instead of the screws. Is it ok to inject epoxy into these thin cracks or should I be opening them up / replacing sections of wood? I’ve also got some glass fibre tape I could use across the cracks. Any thoughts / advice greatly appreciated, or let me know if there’s a better thread to ask this stuff on (I guess there’s probably a better aligned forum out there somewhere but I thought I’d try here first).