Training is a race. It's paying X value for the trainer and the trainee. Because by the skills they are more expensive for being younger. If they age, with the skills the same spot, they drop in value. You have to race to keep the players value INCREASING at the same rate as what you are paying for a trainer, and what you are paying in losses regular season (because for same moeny you could have had a better player but older, or another player instead of expensive trainer).
In Division V why pay 80 for a trainer when you could have an 80k salary PG or C to dominate with? Seriously.
YOU don't know what it takes to get out of 5 which is why you are stuck there.
I got a buddy in US who signed up 2 seasons ago, promote, promote...no problem. He is smart htough and can take advice.....He buys players for like 1k and sells them for 20k or so. Simple strategy and it works.
Which is why one alternate approach is to go out and find about 5 star potential guards with decent but not ideal starting skills, for under 25k each, and 2 position train them for a few seasons, focusing mostly on defense. Pick up a couple of well-rounded vets, invest in the arena, make sick profits, and move on up like that. There's no need at all to have to daytrade at all, no need to invest in a trainer above level 4, to go out and buy only 5-ball level potential guys, or any of that. Those are all things you *can* do, of course, but not a one of those things is required to promote out of V and get back to me at the end of the season for an update on whether they're necessary to promote out of IV. ;)