All forms of handicapping lead to sandbagging. Using one as opposed to the other won't get rid of those that do it. Short of becoming a scratch league nothing is going to get rid of sandbagging, and then some would still do it for handicap tournaments.
The majority of the leagues in my area use handicap based off the difference of the two teams. This form of handicapping sometimes leads to someone complaining about how much they have to give up on a weekly basis. I find even at 100% the higher average teams tend to end up towards the top half after half and season after season. Sometimes a lower team can take a half or be near the top.
Basing handicap as a percentage of a preset number, either team or individual at least all teams/bowlers have a chance at handicap every week, but still one can be "giving up pins" as one team is bound to get more than the other and you will find someone in the league that complains.
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Old: I throw 14 lb balls and have no deflection or carry issues, other than when I throw a bad shot.
New:Well I've thrown a lot of bad shots, causing deflection and carry issues, and am plan on taking a couple steps up in weight and reworking my game this summer.
Calvin's Highs
Career
HG:300
HS:763
Season
HG:279
HS:666