I am wanting to start rei and I find myself with poor 600fico. I just had some hard times with my mortgage but got that back on track and now want to be ready to buy more properties in the next year or so. I say a year beacause I was told before that my mortgage needs to have 0 del. for a year.

How do I best get my score to raise in only a years time?

The best my score has ever done was middle score to 620. My score went to that 620 from a 499 in a year when I bought my current house. Problem was that even a year later with not a single late pay for any accounts my score stayed at the 620 mark.