The 3 critical aspects of monofilament fishing line include pound test, diameter and stretch
Professional grade gunsmith screwdrivers are pricey (and for good reason) but you can build a good quality set of screwdrivers suitable for working on reels without spending a week's wages
They are depth, water clarity, forage, and bottom color
Since that time there have been many shrimp imitations to hit the market by many different manufactures
If you have the 9-volt battery installed, you can use the Black Box to check your natural downrigger readings and your connections
When it comes to those bigger baits, and fishing for bigger fish around heavy cover, I love to use a 7' medium-heavy action bait casting rod, a 6.3:1 bait casting reel and 14-20lb Vicious 100% Fluorocarbon Line