Mamelodi Sundowns forward Percy Tau and Polokwane City hitman Rodney Ramagalela will share the prize - to be handed out at the annual PSL Awards on Tuesday - as joint-top scorers in the Absa Premiership with 11 goals apiece in 2017/18.
The tally is the second lowest to win the accolade in the PSL era, only bettering Bernard Parker's 10-goal haul for Chiefs in 2013/14.
Mangena, who also played for Mamelodi Sundowns, Wits University and Bush Bucks, won the NPSL Golden Boot in 1985 when he scored 25 goals for Abafana Ba Style.
He says finishing received a lot of attention in training during his playing days.
"Of course, who else must do it? Who else must do it and who plans the training sessions? We are the coaches who plan the training session," said Mangeni to the media during the Keyona search in KwaMashu this past weekend.
"We are the ones who plan the training. Today we say we'll start here and go there and there before we even start the training session. We come as players and today the coach says, we'll do this and this.
"I say to you, don't even hesitate, go and sit there and watch Golden Arrows train and tell me when you come back there what did you see. You'll tell me what you saw. Clive Barker, one coach, I became the top scorer because we worked on that aspect with Calvin Petersen, your Bernard Gondwe, Prof Mlungisi Ngubane, we worked on that aspect.
"When the ball goes this way, we knew the behaviour of the player on how he's going to behave. This one on how he's going to behave and we'll attack both the near and far posts, and we'll score.
"I remember at some point we [with Petersen] were together on 16 goals apiece and playing in the same team. Sixteen-16 and we would go there and say, 'siyayishosholoza, siyaphambili' (we are going for it and forward) and it happened because of training, we trained.
"Football is about repetition; you do it, do it, do it, do it until you get it right. Today people are scoring 11 goals and they get R250 000! Huh? What is that?
"What is that? We were getting R2500 and we were scoring plenty of goals. I'm not saying we are just talking, but it happened because of training."
The ex-Moroka Swallows man and SABC football analyst added: "I'm saying you don't reward a loss, you don't reward that.
"Maybe you should say this award is for those that reach this number of goals. Do you hear what I'm saying? Eleven goals, the whole year? Hhayi please man, hhayi gents. Something is wrong here and I don't know, please.
"Someone left this country halfway threough the season, Chris Katongo, and he scored 15 goals in half a year. He left for overseas [in January 2007 to Denmark], he wasn't around and no one was able to catch him. He came back to collect his trophy.
"I said to myself, 'No man, what is happening?' The country has a serious problem and that problem is created."
The last PSL player to hit 20 goals in a season was Siyabonga Nomvethe for Swallows in 2011/12.