Father's Day is coming up, and everyone knows that Dad is impossible to buy for. So Gearlog is here to help you out...all week long. Today's gift ideas are for the Sporty Dad.

Well, there's always golf. But instead of another box of golf balls, get dad a RadarGolf Ball Positioning System ($249). A microchip implanted into the kit's special golf balls will help Dad find them after he has hit them into the woods. A handheld device will lead him to his lost ball with beeps and LCD indicators. For cheaper golf gifts, try a digital score card ($19.99) or a low-tech treat: a golf ball monogramming kit ($18.95).

If Dad prefers the All-American Game, the Digital Speed Sensing Baseball ($24.95) might be the perfect gift. The regulation-size ball instantly clocks speeds of up to 100 miles per hour, helping Dad improve his game...and maybe even letting him brag about his fastball.

If Dad's more of an outdoor sportsman, try the Remote Sonar Sensor Fish Finder ($120, at left). Hook the sensor onto your fishing line, and it will send real-time views of the hook's surroundings, as well as water-depth readings, to a wristband display. It works in depths of up to 120 feet.

And, if Dad isn't much of an athlete but loves sports trivia, grab the abc Sports Master - it's only $11.98! It has stats and trivia on basketball, baseball, football, hockey, tennis, and golf. The Web site says this gift will help Dad win "resolve any sports argument."