Post your pictures in the photography tab/section as they contain only the pictures and no write-up, you can tag the location where the picture was clicked....you can even post the pictures in the trip section but then it would be suggested that you even put a write up about ur trip/journey so that pictures make sense about where exactly you are talking about.
Publish photo blogs only with unique caption or tittle to it. But chances will be little lower. Instead when you publish trip with some paragraph then for sure you will get at least some points. Try both.