I sail on Biscayne Bay and the Keys, mostly soft bottoms, some hard, some seaweed.. I've been reading about the Rocna anchor and how much sailors like it. Here are my questions: If a Ricna, what size and where to mount. I have a srwk. Catalina direct has a long anchor roller kit, would a Rocna 12 fit this? Also, the recommendation fis for 30 feet of chain and 200 feet of triple strand line. Agree? as always, thanks so much for your suggestions.