1. Kantar, in "Bridge for Dummies" 2nd Ed says on page 191 that the 2♦ bid promises a minimum of 11 HCP (maybe 10 with a strong 6-card suit) and promises to bid again..."That promise written in blood, allows you to relax knowing that your next bid cannot be passed."
2. Downey and Pomer in "Standard Bidding with SAYC" say on page 72 "...unless opener rebids game, the responder in a two over one auction always promises another bid."
My question is whether this is common practice, or whether responder might pass in a sequence like 1♠ - (P) - 2♦ - (P) - 3♦ - (P) - ?
I was faced with this problem holding:
Scoring: MP
and felt bound to bid a reluctant 3♠. This is where we played it, in a 5-2 fit with partner holding Q6432 in spades. Not great. The hand played somewhat better in 3♦, but is still not terrific. My partner's full hand was Q6432 64 KQJ AT4.
Is this a "Sometimes things don't work out" situation, or is there a better way to bid this?

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