Breed will play a big part in single lambs so bearing in mind we are all here to learn I would be informative if we state what we breeds we are using and if any diversity is taking place ,I for one agree that if you are using hogs then cross your fingers and hope for singles regardless of breed specifics ,ive lambed on large commercial setups where the owner/ farmers would be going mad at hogs producing singles but when asked why they were angry the only real reasons coming back were greed ,and thats wrong in any setup ,id prefer a eww to lamb singles every year for 10 + years than 3 years of triplets and be fit for nothing thereafter !!