I bet you can get some early season apples to ripen okay in 3/4 sun. Think Pristine, Yellow Transparent, Red Astrachan, Gravenstein, perhaps even Macintosh. Seems like you would be pushing it to try to ripen the really late ones, though.

Along your westerly edge, where you are going to get shade right after "high noon" is a perfect place to grow gooseberries, as they despise the afternoon sun and require morning sun only. I have mine situated against a neighbors stand of tall pines -- they get morning sun only, and do very well. I have seen many gooses grow in full sun in the Willamette Valley, and they look like they suffer quite abit.

Every once in a couple years I have to trench along the property line to disrupt the pine roots that sneak over for nutrition. I'd rather the gooses get the nutrients than his pines!