Jacoba

I really like the name Jacoba, I think it's lovely. It's a good combination of feminine yet not too “frilly”, as I can easily picture Jacoba as a girly-girl, tomboy, or somewhere in between. I would pronounce it as “Juh-co-buh”. Also, I really like the name's cute nickname potentials, Jackie, Coba and Cobie.
Lastly, I really appreciate its association with the beautiful Canadian-American actress, Jacoba “Cobie” Smulders, who played Robin Scherbatsky Jr. In “How I Met Your Mother”.
Overall, I think Jacoba is a wonderful name.

Ugh, I really don't like this name. I would never use this, EVER. I prefer Jacob, for a boy.

I like this with both the English and Dutch pronunciations. As an American I lean slightly towards "ju-KOH-buh" but "ya-KOH-buh" is nice too. This name leaves me with the impression of a pretty young girl.

You'd better not be saying it JAY kob uh? Ugh!

Despite the 'a' at the end, this name doesn't really strike me as any more feminine than Jacob.