18sf portabracket

[jctj123]

looking into closing my transom or raising it 5inches this off season I have a 20in shaft Yamaha 115 2 stroke that performs perfect on the boat been looking at ability to extend foot to 25in shaft but can't find any info on it. contenplated a bracket on closed transom but so many mixed reviews. I love my ride and performance and don't wanna jeperdise its ride quality but my transom keeps the deck wet and I have to keep plugs in drains. really isn't huge deal unless drifting or anchored but I wanna dive off the boat and don't wanna come up to to no boat or have a boat meet me at the bottom. another thought was raising transom and doing portabracket so I could lower engine and may gain some performance by raising it once on a plane but then again same ride quality issues everyone says on smaller boats with setback engine. anyone know wats involved on converting my 2 stroke yams to 25in shaft? or tried a portabracket on 18sf