Quote
And .... DO NOT MAKE MINOR TRANSFER WITH ONLY 5 CARDS!! NEVER!!
This is a example of hand when to bid ♦ transfer and then 3NT:
♠ Txx
♥ 9x
♦ KQT9xx
♣ Ax
Complete rubbish. No offense, but this is exactly the hand NOT to transfer to diamonds and then bid 3NT.
This is a direct 3NT bid every day of the week/month/year. If you intended to show doubt about 3NT, how is partner meant to know what hands he should sit for it and when he should pull? If 3NT isn't making, then there's zip chance of 5
♦ making on these cards.
Transfer to diamonds and then bid 3NT should show a mild slam try in diamonds, if you have no super-accept structure in place, or if you do, a hand that wants to play 3D opposite no fit and 3NT opposite a fit is also possible, or failing that, a shapely hand that has a strong interest in an alternative contract to 3NT.