A couple things that could make a difference. Are you downrigger fishing or using the banana sinkers or other weights to get your gear down? There are a couple setups you can use depending how long you want to make your leader as well.
If using a banana sinker, I would connect the sinker to the braid. As suggested 8 or 10 leader would be fine to the dodger, I usually run heavier to my dodger say 14-16 lb it will take more abuse and won’t affect action on the dodger or the fish and you are less likely to lose gear if it gets nicked or something. I would run at least 4 feet of leader so that the dodger action is not inhibited by the weight, but not much longer depending on your rod length, you want to be able to net the fish and if your leader is too long the sinker will hit the tip guide and your fish is still a ways out. Another thing to consider is the leader test to your hooks hoochie etc., there the 8 or 10 will be fine. I usually make the leader to the hooks lighter than the main line so if for some reason it gets snagged up or breaks off you just lose hooks and not your more expensive dodger. If downrigging you can run a longer leader by using a braid to mono knot that will be small diameter and reel into your guides /reel without issues. Another option is run a longer leader and instead of tying directly to your sinker use a snap weight system, you can put your weight on by snapping it on your line further from your gear, then when you reel in, just unsnap the weight from your line and bring the fish and gear in and that way you can make the leader as long as you like as long as it is connected in a manner that you can reel in through your guided and into the reel. You can buy snap weights or make your own system to snap/connect and disconnect from your line.
Good luck tight lines!
If using a banana sinker, I would connect the sinker to the braid. As suggested 8 or 10 leader would be fine to the dodger, I usually run heavier to my dodger say 14-16 lb it will take more abuse and won’t affect action on the dodger or the fish and you are less likely to lose gear if it gets nicked or something. I would run at least 4 feet of leader so that the dodger action is not inhibited by the weight, but not much longer depending on your rod length, you want to be able to net the fish and if your leader is too long the sinker will hit the tip guide and your fish is still a ways out. Another thing to consider is the leader test to your hooks hoochie etc., there the 8 or 10 will be fine. I usually make the leader to the hooks lighter than the main line so if for some reason it gets snagged up or breaks off you just lose hooks and not your more expensive dodger. If downrigging you can run a longer leader by using a braid to mono knot that will be small diameter and reel into your guides /reel without issues. Another option is run a longer leader and instead of tying directly to your sinker use a snap weight system, you can put your weight on by snapping it on your line further from your gear, then when you reel in, just unsnap the weight from your line and bring the fish and gear in and that way you can make the leader as long as you like as long as it is connected in a manner that you can reel in through your guided and into the reel. You can buy snap weights or make your own system to snap/connect and disconnect from your line.
Good luck tight lines!
time spent fishing isn't deducted from ones life