For "On the Spot", what if they instead used a light up board with dots and revised the game to be more along the lines of "Connect the Dots" instead of the walking aspect of "Pathfinder".
Start at the center dot (FREE SPACE). The goal is to make it to any blank corner dot. The board is filled with dots/prices, some correlate to the SP's, some are "fake" prices that do not correlate to the prizes. The contestant chooses a dot/price, and must decide if the price is a "fake", or if it corresponds to one of the prizes. A correct choice lights up the dot as green/all corresponding dots of the same price light up. An incorrect choice lights up the dot as red/all corresponding prices light up. If the price does belong to a SP, and the contestant is wrong, the correct price on the board lights up red, but that dot/price is eligible to be chosen again. The game ends when either the contestant reaches a corner dot (WINS), or exhausts all possible connections (LOSES).
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Just a crazy idea/modification.