The Santa Cruz trails are easy, but the sand may be wet or very dry and soft, which makes walking a bit harder. The wind doesn't always find the path you are walking on, but it will be there as soon as you get a little higher or closer to the coast. Best go there in the cooler season (the end of October, till the beginning of March)
There are trails to different bocas. Just go as far as you wish. Take time to swim, or sit and rest on a large peace of coral. The little Bocas are beautiful. You can go all the way to San Nicolas!
The first bay you'll see is Santu Pretu, Black Sand. There are a lot of Manzanilla trees. Don't eat the apples or touch the leaves!! They are poisonous.
A little to the West, we saw dolphins.
See for trail maps: Trail Maps - Wandelkaarten