The Coloradoians evidently are terrible golfers, Making you one heck of a ball hawk!
45000 balls lost and retrived part time in 14 days! WOW! No double WOW! WOW! That is about 3,200+ ball recovered per day that is when you work 14 days. At 8 cents per ball that is about $256.00 perday! Tripple WOW WOW WOW=Fantastic!
There are a number of problems associated with ball hawking, number one is the run off into the lakes from all sorts of contaminates; fertilizers, animal fecal matter, decaying substances, all sorts of nasties. Often the natural order is disturbed and the BOD goes haywire giving rise to unusual growths. (You are aware of that - you are a Bio teacher)
And of course there is the libility factor. Most responsible golf courses don't allow or don't want a strange unidenified object in a wet suit on or any where near the course where they could be struck and possibly seriously injuried by a stray golf ball. In Colorado there must be an over abundance of stray golf balls--45,000 every two weeks, but that is only 22,500 per week, or only 3200+ perday.
But then again you can also teach a PADI course "Hawing golf balls" and make untold amounts of M O N E Y!