i've only bothered mic'ing a non-ported kick once...the drummer had a brand new, fairly nice yamaha kit, with brand new heads, and insisted that the kick would have enough punch...i told him that the kick would lack the high-end to cut through the mix, but he didn't listen to me.
anyways, i ended up finding the spot on the outside of the head that gave the most "thwack" and stuck my D6 in front of it, off-axis. it got a nice low end thump, but almost no beater attack. then i went ahead after the fact and blended a really clicky sample under his kick, rolling off everything below 2k or so.
voila, perfect kick sound. of course he ended up thinking he was right about the head, but i knew better...musicians' egos tend to be much more fragile than their instruments, so i didn't tell him about the sample.