Related Clues:

• Go, as through mud
• Trudge through mud
• Walk doggedly
• Walk hard carrying logs?
• Hit - hard work
• Hit hard - work hard
• Work (or walk) involving great effort
• Make a splashing sound
• Work long and hard for second record
• Trudge through wet snow, say
• Muddle through mud
• Walk through a puddle
• Walk through mud, maybe
• Start of a spill
• Work hard — hard work