Show betting the Preakness?

[tector]

I have a friend (really!) who is convinced this is the way to go. He thinks BB and his ouchy feet may be suspect on short rest, but is not mortally convinced of the fact. So his plan--find the horse next most likely to HTB (I don't think he's determined who that is yet), bet that horse to show (large) in case BB runs out. Even if BB comes in, he has a decent shot at getting his money plus 5% (or maybe even 10%) back. Of course his horse could also run out, but, hey, that's why they call it gambling.

I think he is a bit crazy, although if he kicks the bet with a smaller win ticket on his chosen horse, and a back up exacta (BB/his horse) it makes a little more sense. What do you guys think?

I am more inclined to find a playable bomb to HTB, play tris like BB/bomb/all and BB/all/bomb (with maybe a couple of extra punches for combos like BB/ Gayego/bomb) and move on.