Worry not there is overwhelming evidence to support your efforts when you do. In the light the LDS "doctrine" and such collapses like a house of cards in a breeze...
Thread just posted: De-Converting Mormons [From an ex-Mormon]
This ex-Mormon wrote (today):
3) I did my research. I studied up on all the issues both pro & anti. I was able to intelligently convey to them the historical/doctrinal problems with Mormonisim that they weren't aware of.
4) I made it clear to them to them that it wasn't me trying to find an excuse to leave the church but my SINCERE desire for absolute truth which led me out. I started out reading anti books on my mission so that I would know how to DEFEND the church, but I gradually realized that most of the stuff was actually true and that the church couldn't really be defended. My eyes gradually were opened to the fact that the church may not be what it claimed to be.
5) I NEVER ARGUED with them about the issues with the church. I would share the information I learned, give my opinion, but never got in any kind of heated debate or let emotions get in the way. If they came up with some rebuttal, I would give mine and just say "I guess this is just how I see it." If they engage me long enough just the info I provide to them would begin to sink in even if they wouldn't admit it the time. Deep down they knew the things I was saying about the church couldn't be defended. I never "railed" against the church. I explained what things "bothered" me and made me "question" things...