Always make sure you outboard is mounted perfectly straight on the transom, otherwise you'll recognize faulty steering, poor hole shots and reduced speed on the top end. Jackplate - If you opt for a jackplate, one of Mariner's new hydraulic models is the best that money can buy. This new jackplate has two functions in that it raises the motor up and out. This will increase your speed, plus it will allow you to idle through extremely shallow water without grounding out. Always make sure connections are solid.
Soldered connections are most reliable in the long haul.
If your boat has storage compartments, use them. Otherwise, invest in some velcro tie downs or rubber bunji straps. Electronics - Electronics can be very sensitive. This in mind, always mount transducers in the place that will displace the most accurate reading possible. The transducer for my bow flasher is mounted on the bottom of my trolling motor, thus providing an accurate reading of water depth and structure directly below me while I'm fishing.