Ok so here we are in our 2002 356 yesterday. We were motoring into the Sturgeon Bay very busy channel. we were motoring about 4.5 kts. Suddenly we noticed the speed dropping while the rpms remained steady. after A few preliminary panic checks (prop shaft rotation, reverse action,) we figured it was weeds big time in the prop. We continued to deal with this until we found a marina slip (2 miles). in the last few hundred yards we noticed that the boat had very restricted forward motion regardless of throttle. So we think the prop and or keel are (hopefully) very weed fouled-still. It’s a 2 blade oem prop. Due to safety regulations in the marina ( electrical Shock potential) I can’t put on the mask and go take a look. Has any other sailor ever dealt with this. And incidentally this water channel is nearly totally covered with floating weed colonies….