Around here ther is decent money in the handicap leagues. 500 per team per quarter plus 7000 in one house to the winning team and 10000 in the other. 2000 per man of you win is not exactly chump change. Even in the 7000 dollar league each man gets 1400.
There is definitely sandbagging going on. Not much that you can do about it unless it is flagrant like you describe. I would file a written complaint with the league and force them to address it. If they say it's ok then it's not cheating. You have to then decide for yourself whether to play by those established rules to win or to bowl your best each time out.
This is what I was asking when there is a large amount of $$$ to be made then yes that is where the issue of sandbagging will exist...leagues and tourney's.
In my neck of the woods hdcp leagues are just that recreational hdcp leagues for once a week bowlers. In fact this year I suggested to one 5 man hdcp recreational league 30 weeks that we drop to just above the lineage enough to pay sec. treas fee ($275/yr) and ancillary fees don't build a prize fund and bowl for a trophy or plaque. Keep it fun, keep it cheap and you will keep sandbaggers out of your leagues there is no remuneration so no point in throwing off.
Think about it in this example say you pay $16/night for 30 weeks. Lineage is say $13 sec treas makes .18 cents a bowler per night and say another .07 cents a night per bowler for ancillary (fun nights, etc) that makes .25 cents per night per bowler so you are bowling for $2.75/night x 30 = $82.50. I say drop the $82.50 because in a 10 team league thats about what you are going to get back if the league isn't top loaded and paid thru out the league evenly....ie. point money, round winners, singles, doubles and a league could pay in a bit more for the dbles/singles portion if you want to keep that. My point is your are putting in this $80+ bucks and then basically getting the same money back distributed as a prize fund. I say get rid of that and you are keeping the $$$ in your pocket upfront. It's more like paying into the IRS thru payroll deductions and letting them keep your money until tax time rolls around so you can get a larger refund.
If you want high dollar payouts make it scratch and you don't have to worry about it. I am unsure why bowlers would want to bowl large money hdcp leagues and can see why sandbagging exists in these situations. Take the temptation away and no issues or problems.
Just some thoughts.