At 37.5lbs (17kg) the first thing you'll notice about the ST is how light and easy it is to handle. Whether carrying the kayak on your shoulder or loading it on your car, it takes the chore out of getting to the water. On the water it handles like a longer kayak; moderately rockered, good stability, long waterline and a fine bow ensure the ST tracks well and gives it a touring speed better than many longer kayaks.
Of plastic sea kayaks boats for playful conditions (rock play, surfing, etc.), this is the go-to boat for smaller women.
Review comments provided by my partner, a 5'1", 110lb woman. A good friend who is under 5' and probably also under 100 lbs also uses a Gemini RM as her go-to boat,
We've had the boat 3 or 4 years so far and it has been great for her. She has worked on learning to roll and the cockpit on it is not sized so large that she falls out as she did with a Dagger Alchemy 14.0S she had before).
Boat is not as playful as many of the other shorter sea kayaks used for ocean play (like they P&H Delphin and Dagger Alchemy). It tracks very well(which is part of why it is not as playful) and seems more efficient through the water than you would expect for a 15' boat (she is much faster in it than she was in her Alchemy S).
Long term worry is the hatches. Valley hatches are known for dry rotting after 3-6 years. The Gemini uses 2 of custom sizes (not used on other boats), which likely will be very expensive to replace.