Originally Posted by
dbs1
I also had issues getting lift on my 2010 21hp once I removed the 3 series 31 trolling batteries and replaced with 2 lithiums. Added more storage space for sure but the boat struggles to lift the bow and even with a newer 300 pro xs it seems to be 2-3 mph slower than it should. And I've got wedges in between transom and jp.
Going with 4 blade props solved the hole shot and improved the way it carries a load in the heat but seems I've traded off 3-4 mph with not having enough weight in the back to get the nose up.