Actually just had a thought. The #1010 quick slide deck mounting bracket, that comes with all of the compact manual downriggers, can be mounted direct to the boat/gunwale. A #1015 or #1025 mounting bracket is only required if you can not affix the #1010 bracket to the boat (narrow and/or uneven gunwale, or whatever).
The gunwales on the boat I'm buying are not wide enough to accommodate the #1010 bracket, but the guy who is building it said it is not problem to weld on a extra bracket(s) to accommodate Scotty stuff, or really anything as long as it's "do-able." Of course he is going to charge me extra $ to do this, but probably not much more than the cost of buying the additional Scotty #1015 or #1025.
The fewer additional brackets and crap I have to put on/off my boat and possibly lose or break, or drop overboard, the better.
Not sure if anyone has heard of Journey boats out of Kamloops but that is what I am buying (11"6 model). Same beam and bottom dimensions as a Spratley. Was going to buy a Spratley but I don't like that the 12 footer has no front row bench seat. The 11"6 Journey has 3 bench seats which is what I want. A bit more $ than a Spratley but they are built to order so you can get exactly what you want.
https://flyguys.net/journey-boats