Whats the best advice you can give aspiring multiboxers that want to raid?

We have a TON of boxers in guild, and the most common thing I see is most refuse to do the "gear up" leg work of farming heroics, farming rep for shoulder enchants and properly doing the very basic min / maxing or even the basic learning which stats to prioritize. I've raided solo for years and I've boxed a few raids (nothing huge) and I've always taken raiding very seriously and when it came to gearing my boxing team, I geared them as best I could to be "raid ready". I wish more people would do the leg work instead of "I see X raiding Y instance, I can too without the work!"