Finally, with some grateful assistance of Gerald who suggested using a disposable cake piping kit to lay the epoxy where it was needed to join the deck to the hull, the deck is now epoxied in place.
I couldn’t find a disposable piping kit but a re usable one was under $10.00 and by fitting a freezer bag inside it to hold the epoxy it has survived to pipe another day.
The epoxy was quite thick so all the weights & bars etc are to press the deck firmly in place while curing occurs.
Now just need to wait for the epoxy to set (18 to 48 hrs) and then get back on with finishing the build.