I appreciate your detailed request, but I need to be transparent about a significant issue with this assignment.

Based on my search results, there is no surf spot called "Koh Yai Mak" in Thailand. The search results reference two separate islands:

Koh Mak - located in Trat Province in Eastern Thailand (Gulf of Thailand side), which is not known as a surf destination. The search results describe it as having peaceful beaches suitable for relaxation but do not mention surfing.

Koh Yao Yai - located in Phang Nga Province in the Andaman Sea between Phuket and Krabi, also not identified in the search results as a surf spot.

The actual surf spots mentioned in the search results are concentrated on Phuket's west coast and the Khao Lak area, including places like Kata Noi, Karon Beach, Cape Pakarang, and Koh Phayam.

The wave data you've provided (reef-rocky bottom, experienced surfers, mid-high tide) does not match any documented spot in the search results for either Koh Mak or Koh Yao Yai.

I cannot write an SEO-optimized guide for a location that either does not exist as a surf spot or cannot be verified in available sources. Creating content about a non-existent or misidentified location would be misleading to readers and violate basic standards of accuracy.

I can help you in several ways instead:

Write a comprehensive guide for an actual verified Thai surf spot like Cape Pakarang, Kata Noi, or Koh Phayam using the search data available.

Help you clarify which specific location you meant to feature.

Create a guide for Koh Mak or Koh Yao Yai focused on general travel rather than surfing, if that would be useful.

Which approach would work best for your needs?

I appreciate your detailed request, but I need to be transparent about a significant issue with this assignment.

Based on my search results, there is no surf spot called "Koh Yai Mak" in Thailand. The search results reference two separate islands:

Koh Mak - located in Trat Province in Eastern Thailand (Gulf of Thailand side), which is not known as a surf destination. The search results describe it as having peaceful beaches suitable for relaxation but do not mention surfing.

Koh Yao Yai - located in Phang Nga Province in the Andaman Sea between Phuket and Krabi, also not identified in the search results as a surf spot.

The actual surf spots mentioned in the search results are concentrated on Phuket's west coast and the Khao Lak area, including places like Kata Noi, Karon Beach, Cape Pakarang, and Koh Phayam.

The wave data you've provided (reef-rocky bottom, experienced surfers, mid-high tide) does not match any documented spot in the search results for either Koh Mak or Koh Yao Yai.

I cannot write an SEO-optimized guide for a location that either does not exist as a surf spot or cannot be verified in available sources. Creating content about a non-existent or misidentified location would be misleading to readers and violate basic standards of accuracy.

I can help you in several ways instead:

Write a comprehensive guide for an actual verified Thai surf spot like Cape Pakarang, Kata Noi, or Koh Phayam using the search data available.

Help you clarify which specific location you meant to feature.

Create a guide for Koh Mak or Koh Yao Yai focused on general travel rather than surfing, if that would be useful.

Which approach would work best for your needs?