Well lets see here now how do we do it... ... HMMMMM..... I got it !!!,,First go to the shop and uncover the shinest ride in the northeast,stand the brightest shop light near it,lay the finger on the hood and the splinter should show its ugly self,,Carefull now though,use plenty of sunscreen and a set of good shades because the glare off your hood might burn you and cause momentary blindness,LOL... .
On a serious note SHINEBOY,a bright light,magnet and even soaking it some may help to see it or cause it to surface enough to be seen,,If it can not be found then a trip to docs may be in order,,I am like Briar on this one,thank goodness for Mechanics wear,it certainly has lowered the splinters deal... ... Andy