In some ways this seems like a stupid question: What should a JUCO player be doing to maximize their options outta JUCO? Position player, hitter.
I say "stupid" because: JUCO is a chance to demonstrate skills. So they should, of course, demonstrate the skills. And JUCO coaches are well-connected and super influential, so they should, of course, be right with their coaches.
But, what else? HS players are encouraged to correspond with college coaches, to attend on-campus camps, to publish profiles and video. To attend endless showcases. Does any of that matter for the JUCO player?
For context: My son is a true freshman at a NJCAA D1 school in a good conference. He has earned some starting time as a position player and DH, and hit successfully (300+ BA, 700+ slugging) against good pitching. He is in a good spot with his coaching staff. He's doing good, but there is a lot of talent out there. He will be playing summer ball in a collegiate league that will get him reps, but isn't flashy.