I can only speak to the coast of Mindanao with any kind of certainty.
Surigao City is a great place to stock up if you feel that you need to. Most boats tie stern to along the "boulevard" which is the very long wharf you are sure to notice. The boulevard can be busy and loud at night so anchor
1 or 2 cables
off, the further South all the better in order to shade the current
. You can not anchor
South of the terminal at the South end. The market and grocery stores are at the North side of town, by the way
From there South the coast and outer islands are littered with great anchorages
and hidey holes;
You are going to want to get through the straits but do not pass up the Sohoton coast of Bucas Grande before you enter the Pacific. This is the "Palau of the Philippines" and a national park. Free mooring
balls are available in nearly every cove but be sure to dive them if you are experiencing any rare westerlies. A month here would not be enough.
From there South along the coast there are a lot of anchorages but none are well charted and all are subject to swell. Most are protected by reefs
but you do not want to be stuck there. Consider this whole coast a lee shore under normal conditions.
Bislig bay - Mangagoy; My stomping grounds. Another good place to stock up for essentials and seafood. If you want to go in to town, anchor West of the Picop jetty (big gazeebo at the end) on the South side of the bay, dinghy
to the East side of the jetty and beach at Danipas, no one will mess with it, I promise. You can then take a tricycle taxi to town. Do not attempt to approach Mangagoy proper. Big rollers come in this bay at times, like right now. If you are not interested in town, go to Hogonoy Island on the North side of the bay and anchor on the West side (008°15'18.52", 126°22'4.87") in 3m sand. This is a great place to wait, get your bottom cleaned and buy fresh fish
off of fishing
boats if the weather
Its a 2 day passage
from Surigao City to Bislig Bay straight away. It could be stretched out to months in a 4' draft
boat skippered by a daring soul.
Remember to smile when you are in the Philippines!