firstly, welcome abort.
secondly, it would be useful to post some picture and let us see the condition of it. (for posting picture you need to post them to some picture hosting site and give here a link)
instead of coating, we prefer to use backing. and backing materials vary according to a bow and its wood but generally accepted is glass.
some use sinew, some hemp, raw hide even paper. it depends your bow condition and desire.
and moreover, for bow making/repearing question discussions we are using "bowyer's bench" tag.
so it is better to move this thread to this tag. i am sure admins will handle it.
well good luck it is a long long journey. addictive and joyful.