Most of ours are also larger (in the 40-42" range and not "true" minis...), though I have quite a number which are shorter than 38" as well and now three that are larger again (43/44 - our original Shetland stallion was 45 1/4" tall)...
I agree. Farm work - no matter what you are doing - is harder. The disk picture is neat, but it too was very hard work for our girls. I did that partially on a dare, partially because I honestly felt that our girls would/could do it AND I wanted to see how it would go... They had a hard time breaking it free from the weeds/mud it was "stuck" in (cemented to the ground more like!!) and it took several tries of moving them back and forth side ways to find an angle that they could break it loose (without me in the seat). Then they pulled it quite a ways - down a graveled farm road (the disk didn't have any wheels on it - I felt terrible having them pull it not in a field, all my hair on my arms/neck stood up as if electrified and will need to ask/study how to do that differently at another time) that was roughly 1/2 mile long before moving along the edge of the road and back almost as far along the outside of the field being done
before stepping into the field to disk... Then they disked down one way, turned back towards the back of the field and started back before I decided that they'd had enough. I guided them crossways thru the field to the outside edge and had them step out of it back onto firm ground... I wasn't shown how to do any of the adjustments that the disk had available - but since then I've learned SOME of the adjustments that could have been made (everything from raising most of the blades while going down the gravel drive to dropping them deeper and switching the angle directions to be more effective in the field). The girls were tired after that "little bit" of work, even though they were in good shape at the time. Between that work out, and the later travel time where we got caught out on the highway that was shut down due to the tornadoes that day, they remained very "sedate" (for them) for over a week... They got worked some each day for the next week - but not much - they simply didn't have their "normal umpf"...
How they looked after they were done with that 1 row of disking (from the back of the field to the road, back to the back of the field then start again but then angle out)...
In a way, it was a bad idea to do what I did. It showed just "how little" the little guys could do (depending on how you looked at it). BUT I've also been to several events since 2010 where the "big guys" weren't in condition for the work they were doing and were "well used up" by the time the plow day or even a trail drive were over. It's a matter of conditioning and learning to read your single, team or hitch, so that they can do the work expected of them. It's not any different than riding and knowing when to increase both distance and difficulty when working your mount... AND we've been approached about putting our ponies together (Vicki's 2 and however many of mine as would work when they are trained) to do some of what the bigger hitches do with the gang plows. It could be interesting to see what happens when we actually use 3 or 4 ponies to make a 3 or 4 abreast hitch (I'm training ours this way now) OR 3 abreast, 3 abreast & 3 abreast (9 ponies) with a pulley system evener... Who knows - maybe someday we'll give something like that a try - but honestly - I don't see that happening since I certainly couldn't do it alone at home by myself... I can work with a 3 abreast by myself and really like working a pair. The general rule is as you increase the number of horses in your hitch, you need helpers to give you a hand, help with harness adjustments, head the horses or hook equipment while the driver holds/directs the horses. I've always been impressed with the teams that stand quietly while many people are "pouring over" all the adjustments needed to get them all hitched and working together!!
Yes, I have had to get longer lines to do groundwork from further away and I've also gotten extenders made for my 3 & 4 abreast lines. I don't yet have a 4 up hitch set of lines ... This set of pair lines (mini sized) are too short for ground driving properly with this set up. Had they gotten scared/spooked or even just "frisky", I would have had problems holding those lines. Most of my "home made" equipment - whether from rope or braided - is much longer (25' - 30' lines vs 18 - 20' lines).
Here is a pic of Vicki ground driving Eclipse with home made driving lines and a chain link drag - single. She's driving from behind the whole set up here, but could move to either side if needed or desired. Since this day - Vicki DOES not do nearly as much while ground driving and tells me I'm CRAZY for doing so. She will hook her pair up to the forecart and use the forecart to pull every thing from the disk shown above to the wagon to even trees/logs that need moving.
It's not a .jpg image, so I just posted the link...
https://picasaweb.google.com/103622225470430126127/EclipseAndKreature?noredirect=1#5753963756208984610