I've been swapping out the trebles on jigging raps of walleye size for a long time. I like the short shanked light wire hooks as replacements. Islip the split ring on the open hanger and give a couple three wraps of fine, soft copper wire to close it and add a drop of epoxy to weld the copper up.
Way too many people associate jigging Raps with ice fishing or very cold weather fishing....they're a great bait all year long.