Random Puzzles 

Workings

Hint
'in the back of the net' begins with the letter G.

Answers
good = not bad
wood = forest
wool = sock material
cool = not hot
cowl = hooded robe
coil = spiral of wire
soil = earthy ground
foil = roasting metal
foal = baby horse
goal = in the back of the net

Workings

Hint
The 2^nd word begins with the letter B.

Answers
a-a-e = amaze (MZ) --ave = brave (BR) -uie- = quiet (QT) --gon = wagon (WA) p--ot = pivot (IV) vi-e- = vixen (XN) -ac-t = yacht (YH) --met = comet (CO) b--ep = bleep (LE) -u-ge = judge (JD) -lan- = flank (FK) -ra-e = grape (GP) bon-- = bonus (US)
This puzzle isn't guaranteed to have a unique answer, can you find another?

Workings

Hint
The first word begins with T.

Answer
Too many cooks spoil the broth.

Reasoning
The saying has been broken down into blocks of 4, the last block has been filled with dummy letters. Each block has then been reversed.

Double-Checking
Start with:
   TOO MANY COOKS SPOIL THE BROTH

Group together:
   TOOMANYCOOKSSPOILTHEBROTH

Split into groups of 4 letters:
   TOOM ANYC OOKS SPOI LTHE BROT H

Add 3 random characters:
   TOOM ANYC OOKS SPOI LTHE BROT HBCY

Reverse each group of 4 letters:
   MOOT CYNA SKOO IOPS EHTL TORB YCBH

Workings

Hint
Think of an alternative alphabet.

Answer
N.

From epsiloN, last letters of the Greek alphabet, alpha, beta, gamma, delta, epsilon, zeta, eta, theta, iota, kappa, lambda, mu.