Looking through a number of creationist sites sometimes can cause embarrassment and frustration. Not because I disagree with their main points; I don't at all. I, too, believe that God created everything in six actual days. This fact is foundational to other nonnegotiable Biblical teachings. I believe also in a literal Adam and Eve, and a literal universal flood.

The frustration comes from witnessing well-meaning Christians neglecting the Sword of the Spirit in their fighting against the Goliath of unbelief and evolution, and their attempting to fight them in the armor of Saul. A second failure is that some (not all) of their "facts" are outdated - or just plain wrong.

Lack of confidence in the Word & Lack of credibility in the world
Let's do that last one first. Now, credibility in the eyes of the world should not be the main thing we aim at, since anyone who determines to be a friend of God will be an enemy of the world. So we are not speaking of validation. But we do want our evidence to be believed (this is the root word of "credibility", as in, credos, creed).

Although there is a cranky fringe of "Christianity" that seems to rejoice in not being believed, most apologists aim at convincing enemies, not alienating them. But they just don't show discernment. Not all evidence is good evidence. The world needs to be exposed to the Word. Credible - well-chosen - creationist evidence, if used, needs to be coupled with "Thus saith the Lord". Instead they all too often get the Cracker Jack Chick tract treatment. Examples here are, Joshua's "lost" day ("found" by scientists), for one:

The missing day found - according to Harry Rimmer. Here's the real scoop.

Other discredited - or not sufficiently credited - "proofs" for creation are:
~ Darwin repented on his deathbed and became a Christian. (No evidence)

~ Moondust layers on man absolutely prove 6-day Creation. (Inconclusive)

~ A Plesiosaur was caught off of New Zealand. (Confession time: I had to pull that article from my website. I wrote it back in my more gullible days, 1996, I think.)

~Darwin's "absurdity" quote of the evolution of the eye. (The quote is accurate, but lifted out of it's strongly qualified context: He went on to say that he saw no problem in the eye being evolved step-by-step.)

~ 1 Timothy 6:20 refers to evolution. (It doesn't. It refers to gnosticism, a movement that was already starting to rear it's head.)

~ The speed of light has decreased over time' (This too is inconclusive.)

~ Earth's axis was vertical before the flood (The pre-flood existence of seasons, Gen. 1:14, is evidence to the contrary).

While you are at that site, you might want to check out Mr. Sarfati's excellent article, Moving Forward: Arguments we think creationists shouldn't use.

Another one is Maintaining Creationist Integrity"

But you might say, "You are being naive. The evolutionists doesn't care what's in the Bible. What kind of evidence is that? Why even quote it to them, seeing that it would be a waste of time?" But that is really the voice of unbelief. And, it is not what the Word says about itself: "My Word will do the work it was intended to do. It shall not be void."

If we don't see the results we expect - and we do not see into the hearts of our opponents, neither do we see the final results of our proclaiming God's Word to him. Yet, even if our evolutionist friend remains a skeptic and goes to hell, still, the Word was successful. Unfortunately for him, it was a "savor of death unto death" instead of "life unto life". But be sure of this: If that person proved ultimately unresponsive to the Word of God and of life, he would certainly never have responded to the best and most credible evidence of creation science. See Luke 16:31. Spiritual proofs are needed for spiritual blindness. The Word will cure this blindness - or it won't.

I need to add this also: Don't ever pull the blunder, when quoting the Bible to an unbeliever, to say something like, "This Bible is the Word of God because.....well... it says so!" That is perhaps non-evidence #1. Use the Bible, yes. Use it with confidence. God's Word will do His work. But you don't need to build up the Word. Those convinced of that fact will need no convincing, and those not, not. Goats will be goats, sheep will be sheep.