Also, I've only taken a mooring a few times. Singlehanding, I've either motored along side the mooring and picked it up with a boat hook from the helm; I then tie it off on the stern cleat until settled and then transfer it to the bow. Or, if the weather is blowing or tide flowing, I've also put out an anchor near the mooring, dinghied over to it, attached a line and then pulled myself in.
I don't get seasick easily, but I've done so more often at anchor on my cat, than underway. If the wind is blowing in one direction, and the tide in another, the cat will spin at anchor. Add to that a chop or gentle swell, and it's a recipe for disaster.
Scott
Gemini Catamaran Split Decision
Captain's Blog