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No cup holders! What to do? Not that I have to have a drink with me, but also to put the phone, cigs, lighter and sunglasses somewhere easily accessible. A close at hand waterbottle sure is nice to have. My car has 6 cupholders, why should my boat have none?

There is a flat area behind the throttle that looks like a perfect spot for it. However, it's a tad short, so the lip of the stainless cup holder overhangs the rounded edge by about 1/16 th inch. I think it will look fine.
I bought two stainless cupholders and a 3 5/8" hole saw blade.

The tape is on and drill holes marked. I'm set to go in, but...am I making a mistake?

Somebody tell me why I should not do this?