Lake Francis Case is a 102,000-acre Missouri River reservoir in Gregory, Lyman, and Brule counties in south-central South Dakota — the second largest of the four Missouri River mainstem reservoirs in South Dakota and a premier walleye, smallmouth bass, and pike fishery drawing anglers from across the northern Great Plains. The lake stretches approximately 107 miles from Fort Randall Dam at the southern end to Big Bend Dam at the northern end, creating an expansive Missouri River impoundment with 540 miles of shoreline across the rolling prairie and river breaks of south-central South Dakota. The Missouri River walleye fishery on Lake Francis Case is nationally recognized — the lake produces trophy walleye in numbers that draw dedicated walleye anglers from across South Dakota, Nebraska, and Iowa specifically targeting the Francis Case corridor during the spring spawn and fall feeding periods. Smallmouth bass, northern pike, channel catfish, and white bass round out the year-round fishery. The communities of Chamberlain and Oacoma on either side of I-90 at the Missouri River crossing anchor the primary boating infrastructure and service market for the lake. Find Boat Services lists verified boat repair, motor service, electronics installation, trailer repair, and winterization providers serving Lake Francis Case within 35 miles across Gregory, Lyman, and Brule counties.
Trolling Motor Specialists near Lake Francis Case
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Trolling Motor FAQ
Basic bow-mount installation typically ranges from $250 to $500 in labor. For complex Smart Rigging (including NMEA 2000 networking, lithium battery trays, and on-board chargers), labor costs generally fall between $800 and $1,500.
Brushless motors (like the Minn Kota QUEST series) are significantly quieter, more powerful, and 30-50% more energy-efficient than traditional brushed motors. For Midwest anglers who regularly spend an entire day or more on the water, the upgrade pays for itself in extended battery life and the stealth on pressured fish in clear water.
90% of vibrations are caused by a bent prop pin or a chipped propeller. Even a tiny “tick” in the prop can cause massive vibration at high speeds. If the prop is clear, you likely have a bent armature or water intrusion in the lower unit, which requires immediate professional service to prevent total motor failure.
Yes. Many boaters are swapping three 12V lead-acid batteries for a single 24V or 36V LiFePO4 battery. This saves up to 150 lbs of weight, improves hole shot, and simplifies your charging setup. Just ensure your battery’s BMS (Battery Management System) can handle the motor’s peak amp draw.
Always use a stabilizer bracket (like the RAM or Minn Kota models) to lock the motor head in place. The constant bouncing on highways (or high waves) can cause the mounting bracket to crack or the motor to accidentally deploy, which can be catastrophic at 70 mph.