JayTee

What about the wind? I would take that into consideration as well.

For me I need the riser but thats likely because i am 5’8”. Rule of thumb for me to maximize the wave is putt 400# all the way forward in the bow and the rest midship. Then if you cant either see over bow or get the boat to 11.5mph, then you need to keep adding to bow until you get there.

Yes 500# is a good place to start. We run 600# lead with most as far forward as possible in the bow and depending upon how much gas and people in the boat, we keep the rest midship or further back. Just remember, while lowering the bow does lengthen the wave, it also makes it less steep. Speed lengthens as well, so we find running at 11.5mph works best for us. Good luck.

Sorry no help here cause we only surf….but I had to reply cause your boat is beautiful!

Thanks all, will do and stay tuned….

Move more people/add more weight to the bow. I’m running at 6000’ altitude and it seems whenever we dont have enough people in the bow the nose is too high and we just push water, and the boat struggles to get up 11.5, which is what we run. Plus as an added benefit it elongates the wave. Oh yeah and we run 300# in the bow but going to bump it up to 600# so we dont need everyone in bow.

Update - so I connected with Larsen and they told me MB stopped supporting them for warranty items, so unfortunately they were unable to help me. For the actuator I was told I need to find another dealer to get diagnosed and replacement….less than ideal. And for the Exile audio it gets even worse - since MB is now using JL, they no longer support Exile warranty items and I need to working directly with Exile. Not the best customer experience . . .

Sorry if not clear, but I’m the original owner.

Hey All….this past trip both my cav plate and stereo stopped working and unfortunately I am 5 hours away from my dealership (Larsen), so looking for most efficient way to handle these fixes. Cav switch has power so assuming its the actuator. And the Exile Bluetooth controls work and the amp seems to work, but still no sound coming out. so assuming its the controls unit that has an issue. Quick question for those that may know….Don perhaps? When i got my 2019 F21, it came with limited paperwork re manuals and warranty. I found a warranty doc on MB’s site that talks about the 3 year warranty on most things in the boat but has zero mention of actuators. Any idea if these are covered or should i just go buy a replacement? Re the audio, the warranty doc (see attached) mentions that it has a lifetime warranty for the original owner….is this possible and true? And if so, should I be able to reach out to Larsen and swap the controls unit or should I go to MB now that Larsen is no longer a dealer? Thanks all! JT

Just 300# lead. You could for sure handle more weight up front which would keep you from having to place adults in the bow.

Never measured pitch and angles as GSA isnt adjustable on 2019’s. But what works great for us - we weight the boat evenly with everything full (sub floor & piggy backs) and place 300# of lead in bow, then have atleast 1 adult in the bow as well. Makes for an amazing wave both sides. Good luck!

My buddy has a MC X23 (their “surf boat”) and have surfed it many times, and its fine. But its wave is nowhere near as clean and with as much push as my ‘19 F21.

Thats great. Does it impact the wave at all?

Anyone know if those hinges are available and if they work on 2019 F21 cushions?

Welcome and yes there are some subtle thing you can do to get the wave better considering the f21 should be killer. Assuming your ‘17 F21 has GSA and is similar enough to my ‘19, here’s what works best for us - start by filling sub floor & piggy back tanks in rear lockers.This will make your nose pretty high while underway which creates a super steep wave close to the boat. You counteract this 2 ways: 1) speed - take your speed up tp 11.5 as opposed to the stock set up of 10.8 (as i recall) - this will make the wave longer, cleaner and more fun 2) bow weight - by placing enough people and/or additional weight (ie we use 300# lead) in the bow. By doing this you continue to elongate the wave and as an added bonus the nose comes down so its much easier to see in front of you. Once you do this, you should have a super clean waist high wave with ridiculous amounts of push. Have fun and don’t be shy about moving people around in the boat until you get exactly what youre looking for.