reposting from last thread:
Aaaagh, I was in Festival!!
https://www.freerepublic.com/focus/chat/3751348/posts?page=1866#1866
Or one frog (PDJT), being a builder, puts an upside down u-frame at one edge, slides the log into it so it doesnt tilt but reaches & passes the other edge, nails it into the frame... then everyone crosses.