Please Parse....

[tripod1]

Three clues I could not parse:
1. "With no end of frustration, search for shack" - I have HUT for an answer.
2. "Beasts of burden unhappily carrying limited container" - I have ALPACAS.
3. "Take ill-considered action and leave a drink set up around end of summit" - I have GO OFF AT HALF COCK.
Any help with parsing would be appreciated - thanks.

[Neveracrossword]

1 Hunt, search, 'with no end of frustration' = drop the final N. Hut, shack.

[Neveracrossword]

2 Alas, unhappily, with Pac(k), kimited container/container missing its last letter. Alpacas, beasts of burden.

[TheWinner]

2. I'd guess unhappily could be ALAS and limited container could PAC(ket) ?

[klazomaniac]

Best I can see for 3 is:

Take ill-considered action = Go off at half cock
Leave = Go off (to)
A drink = A half (as opposed to a pint)
Set up = cock (I'll put a link below. Look under verb)
Around end of summi(T) = T

Go off a T half cock

https://www.merriam-webster.com/dictionary/cock