Thanks Fay my wife and I had a great trip a little lacking in surf by it being too big on one side of the island and non existant on the other thanks to a Super Typhoon.
But lots of culture and temple stuff!
Now about you and your SI joint! [i]For others reading this advice is not appropriate until 48 hours or more have passed since the injury and is only general advice and if you have an injury it is better to seek a proper diagnosis and gain a clear treatment plan from your health practitioner[
The ice is good and now I suggest you try these couple of things.
Ice rest and heat.
Ice as you have been doing for twenty minutes
then, allow your bottom to return to normal temperature for at least 40 minutes
then use a heat pack for twenty minutes.
do several times per day
The cold drives blood away from the injury and takes some of the damaged cells and dead blood from the bruising
but you have to allow the resolution period to normal body temperature before applying heat as jumping directly from cold to hot will cause vascular damage.
After the resolution to normal temperature heat will bring fresh blood and with it the ingredients to help healing.
You can also have someone rub gently Tiger Balm ( white) into the bruised area. This does the hot and cold feeling too, through the TigerBalm.
A couple of cautions here,
1. a few people can react to Tiger Balm ( my wife is the only one I know of ).
2 Do not have too vigorous rubbing or massage of the bruised area as there will be a clot deep where the actual tissue happened,this should not be disturbed. Rubbing of the area above the joint should be towards your head not your feet.
If in doubt about how to rub the area just have the Tiger balm lightly applied to the skin
These are general purpose self help things you can do, but if they don't seem right for you, stop immediately and see your own health practitioner.
You will now have a mentholated bottom
I've taken up troll hunting just for fun, instead of a rifle I'll just use a pun! 冲浪爷爷