I'm afraid I don't hold with bait boats, and I'm blowed if I see the need to fish at those huge distances in freshwater. When I was a keen eel angler, I very rarely used to fish a bait at more than 10 yards out, all of my big eels came from areas under the rod tip(literally right under the rod tip)and during those years of eel fishing I had my fair share of big carp and pike grabbing a bait meant for a big eel. I once had a 20lb+ carp pick up a dead frog as I lowered the bait into the water, it never had the chance to touch the bottom.
Beach fishing is a totally different ball game, sometimes you do need to fish at extreme range...I had a series of casting lessons from the master himself, Alan Yates, he taught me to put a bait out to well in excess of 200yards, but there again, I would always fish with two rods...one at range and one in the surf line. My best ever bass and my best ever cod both came to the baits fished in the surf line...
If the carp/pike/whatever species you are after are seen at range, why not tempt them in closer? Half a loaf of bread crust dropped into the margins will pull carp in from distance if you do it right, they will be able to locate the bread by smell and will follow the scent trail in. Use a different attractor for pike, or in my case eels....I would make up a disgusting mix of mashed up mackerel, herring or any oily fish, fresh blood from our local abbatoir, chunks of tinned meat and breadcrumbs to hold it together. Dropped in the margins both side of where I was fishing, this would attract all sorts of fish in from all over the lake.
You won't need heavy leads either, just a hook attached to the main line...you won't need those horrible bleeping buzzing devices to tell you a fish has picked your bait, you can see the fish take the crust off the surface. I did buy a pair of bite alarms once...used them once...and put them in the cupboard, where they stayed. Night fishing...not a problem, just wrap a piece of silver paper around the line where it leaves the reel, when a fish grabs the bait the silver paper will catch in the rod rings and the rustling noise it makes lets you know that something is happening. If it's windy, then pull off a yard or two of line from the reel and trap the silver paper under a stone...it will pull out when you get a take and rustle away in the rod rings.
Just my thoughts...
Rich