When is hard too hard?

[BetteK]

No, that's not a quiz question!
With all the current discussion about whether answers should be asked for or given or how soon should anyone ask for help I began to wonder how hard is too hard?
I am currently struggling to find a couple of answers on a couple of quizzes but think they could well prove to be "too hard" for me. Question is, do I admit defeat as closing time approaches and not send the quiz back or send it in anyway?
I have set the odd quiz in the past and even though I have collected the £1 entry fees in advance and so "have the money!" I have always felt disappointed when few quizzes are returned for marking and people comment they were too hard. Of course, I don't think they were and always ensure any answer is "findable".
I would - I think - choose to send an incomplete quiz back if only to show support but wonder if sending in my £1 is support enough?
I know my limitations and rarely tackle cryptic quizzes or crosswords but like to tackle others.
As for asking for help far in advance of the closing date - personally I have "given up" on three questions in the St. Guthlac's Number Hunt quiz even though the closing date is still far off (and NO I am not asking for answers!!!) - I have exhausted all the avenues I know to work out these last three answers and even if I had another 6 months then I know I would not come up with even a guess - well, ok, I could make a guess but it would be a daft one and not an informed one.
Just wondering!

[boysinblue68]

alexanderd - sorry but I have to disagree. If you look in a book, or search google yourself, you may find the answer "under your own steam" and if you do, then you and you alone have found the answer. By posting a question on any Q&A site, and then someone providing the answer, puts that answer in the public domain for anyone to see. The asker gets the answer but has not found the answer themselves, merely been given it on a plate - and it has been given to everyone else as well. I do agree that any question is easy if you know the answer. The hardest part of any quiz is setting it in the first place - which is why so many quizsetters ask that their quizzes are not spoilt by being asked on Q&A sites..