This may also help:
http://www.state.nj.us/njsp/info/pdf...ety-manual.pdf
Here's the part i copied from that PDF that should apply to you:
" A vessel under oars may exhibit the lights prescribed in
this section for sailing vessels, but if it does not, it shall
have ready at hand an electric torch or lighted lantern
showing a white light which shall be exhibited in suffi
cient time to prevent collision. (See Figure 8). "
So, according to the above your headlight or handheld light would comply..
