friends, would you have any first hand information on how costly it is to keep and maintain a jetski here sa mindanao? we live near a river which opens up to the sulu sea and plan to get a recreational watercraft to take us to islands nearby, living near the river means we can make do without a trailer. banca takes too long and frankly is too noisy. will a 50cc wave runner be sufficient to get two adults and gear across 21kms of open water in decent time? say less than an hour?