Thanks for all the care. Good to know the police are making their presence known. I put up signs all over the area. A homeless guy saw the signs and found me. He has heard everything. He thinks its a group of teenagers that 1 of them lives in a house that backs up to the trail, on the east side(the main side where everyone rides). He says they try to start problems for the homeless ocassionally, but have never actually faught them. He also says he has heard of the causing problems on the trail before, but never anything like this. Don't know whether to believe they guy, but will be passing the info onto SAPD and will put fliers all over that neighborhood.