Getting to the bliss

I'm assuming you're already experiencing regular orgasmic success but would like to shift the ratio towards more calm seas? I'm in the same boat, where "rough seas" as I like to call them are pretty easy to reach, but calm seas don't come as regularly. And since rough seas are less work easier to reach for me, I tend to go for them most of the times, so I might have less practice with calm seas. 

Now for me, the more intense the physical and mental stimulation get, the greater the chance to have a more intense orgasm, or in other words, more arousal and intensity will lead to a lesser chance of calm seas. So lots of nipple play, more aggressive audio files or music, more stimulating visuals, in some cases a more stimulating toy (in that case I'd say Helix or Progasm are more aggressive than Eupho or Peridise), stronger voluntary contractions, will lead to the rough seas, and the opposite is true where a calmer approach has more probability to end up in calm seas. I don't know if this is universal and the way you approach your practice will probably have an impact, for example if you think the orgasm "happens to you" vs. being something you do to yourself, and how you see calm seas orgasms in relation with the less-calm ones. 

Edit : 

For example, at some point I thought that calm seas and rough seas were at opposites ends of a spectrum, and now I think that they run parallel. Maybe these are only words and don't affect things, but I do think that perception is important here. In the same way, I believed that calm seas were more "passive", but there might well be an "active" way to get there. Bottom line is that I don't have enough control over this to give a less cryptic answer right now and can only offer some hints. 

One thing I’d say about this,it can mess you up trying to recreate certain orgasms on purpose. Usually it’s best to just take what your given and smile! 

I don’t know what calm seas are for other people. For me it is overwhelming good feeling and warmth and tingles taking over my body. I get there usually without a toy, through singing, thinking of sweet and tender things, feeling chills and trying to get those chills to generate more chills by letting myself be carried away by the moment. Very vague stuff, I know...