there is always someone that cites some crazy reasons as to why someone else should not do something. if we always followed the doom and gloom worry wart type's advise, no body would ever do anything. we would all be at home sitting safely on our couches on the internet, now wouldn't we?
i would bet my last dollar on the fact that if ole capt sam were stranded afloat, he would gladly accept a tow without ever asking, "hey buddy, do you have the proper coast guard paper work authorizing you tow?".
most states have good samaritan laws protecting the those rendering aid in good faith.